Instruct: Classify Amazon reviews into positive or negative sentiment
Query: To my surprise, this was a good purchase.

I've owned this and used it for many years (as a monitor for my laptop) and watched tv in between times. It was purcased used on the internet and I've never had a problem with it and can use the remote control to switch between sources. I even took it with me on a 9 state vacation last year and still using it!