Very Bright - Brighter Than Old 1157 Bulbs
927712
Glad I got these LED Bulbs .... Thye fit perfect into the old 1157 socket and shine bright .... I don't know how long they will last but the quality of the build is very good.
3336237
bulbs worked perfectly...but they are really bright. That's ok after putting up with old bulbs not working for a long time.
3003970
I bought these lights to replace halogen lights. The halogen ran so hot that the plastic rims became brittle and fell apart. I really liked the brightness of the halogen and was wary of the new LED's. I did some research to determine the brightness quality. Needless to say it was confusing because different lighting sources use different terms to quantify how bright the lights are. I read lots of articles and saw a lot  of blah blah blah .  I determined these were worth the try, and I am very pleased with this purchase. The lights are bright and soft at the same time. I use them in my bathroom vanity and would buy again.
267010
I wasn't sure which type of LED bulb to get to replace bathroom vanity bulbs.  These are perfect, a little brighter than the clear 60w bulbs they replaced, yet not that blinding blueish light of the 5000k leds.  Would definitely buy again, I just hope I don't have to do that too soon, as in, I hope they last.
1453298
Bought 12. No bad bulbs in the bunch. Very pleased. These are much brighter than the old 65-watt bulbs these replaced. Pleasant light. Instant on. No problem with heat. Super packaging. I've compared a lot of bulbs, including the older one with the giant fins, though also a number of other BR-30's from other manufacturers (we have a lot of cans). These are the best so far. I'm sure 6 months from now, there will be newer/better/cheaper, but I'm very satisfied.
3757535
As folks have said, these are the Phillips stamped bulbs, they are brighter, and a bit whiter than the 9006s.  A minor snip of one of the tabs with a pair of diagonals and they fit right in.  I got these in lieu of going hid or led, figure it was worth a shot.  I don't have many night miles with them yet, but they are brighter than the 9006s I replaced.
4714459
These bulbs are great.  The color is very soft white, (warm white).  They are as bright as the ones that I replaced.  I will be buying 10 more of these to complete the upgrade.  I have two other styles of bulb to replace and I will be buying this brand.
1582344
These bulbs replaced much larger "moon" bulbs in my kitchen pendant lights. They worked perfectly, and are  just  a bit brighter than the 40 W bulbs they replaced.  So now, instead of using 280 W, I'm using 63 W each time the lights are on.
2887313
Got these today and got them installed straight away. Really like the 3000k color, I say it's closer to a bright white/daylight than the 2700k warm.  I'd call these 3500k bulbs.  Old CFLs were 900 lumens but these things blow them away, maybe because the CFL's were on the verge of death (1 had just died and another had a purple tint).  Only complaint is their height.  These went into a bathroom vanity light where the old CFLs were short enough to not been seen inside the shades.  These extend out the bottom, doesn't look bad but we may get new shades.
389527
Very bright with clean white light. These are a bit bigger than the light it replaced (74) but fit fine.
727558
These lights from Hyperikon are wonderful.  They are bright, slightly colder color that I would most want, but fine for my application of lighting my workshop.
Both my workshop and basement are lit by dual-bulb 8-foot fluorescent lights.  The ballasts don't last forever -- it is 18 years and they need to be replaced.  I plan to replace them all with these bulbs.
It is simple to rewire the fixture to remove the ballast.  I wired both sockets, although I intend to use only one bulb per fixture because the LED bulbs are so bright.  If I need more light in an area, I can install another bulb in a moment.
I emailed the company for the clips mentioned in other reviews, and they should arrive soon.  The bulbs are flexible, but since they are plastic and aluminum, it is not as scary as working with 4-foot T-5 bulbs.
Time will tell how well these last, but for a first impression I am completely pleased.
2801875
These bulbs are bright and I love the 3000K color for indoor. Not too orange, not too blue. I have 6 in my kitchen, two in dining room, and just bought 4 more for hallway. There is a slight (milliseconds) delay after you flip the switch but this is not annoying at all.

UPDATED to 4 stars after installing a Lutron CL dimmer switch for LED the Hyperion bulbs now have a buzz at all brightness levels.
1692645
I got a 6-pack of these (listed as 50W Equivalent, 3000K Soft White) to replace some 50W halogens in my kitchen/dining area. Compared with the halogens:
The light from these is less yellow, as expected. I'd say the 3000K rating is accurate.
These bulbs are quite a bit brighter than the (cheap) 50W halogens; these feel more like 75W equivalent to me.
These work well with my old&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Lutron-Diva-Dimmer/dp/B004DZOMKC/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Lutron Diva Dimmer</a>, and I haven't noticed any buzzing from either the bulbs or the dimmer. The color remains constant when dimming, unlike halogens which become more orange.
The dispersion of the beam is about the same as before, maybe a little narrower.
1323265
I am surprised and pleased with these bulbs.  They are brighter and the light softer than my old incandescent bulbs and use one sixth the wattage
3296438
Very bright - huge improvement over sealed bulbs. Do have a sharp cutoff and may not cast as well left to right, but still way brighter overall.
2025797
These bulbs are fantastic. They claim to be 110W-equivalent on Amazon, and 100W-equivalent on the box. I installed six of them in place of four 150W two 120W incandescents, and our living room is brighter than ever, which a much nicer color temperature to boot. The bulbs are on really old dimmer switches (nothing special for LED bulbs) and they work great across the entire dimming range. Bought them for the price and the reviews; was definitely not disappointed. The ten-year warranty is a nice cherry on top, although I hope I'll never have to use it :)
1285335
much brighter than factory bulbs  -- I have tinted windows and can see where I'm backing now installed on 2013 1500 Silverado  also a very white light as compared to factory bulbs yellowish light