Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Works great but a little hard to operate by feel

I just upgraded from a Harmony 659. I love the charging cradle, and a charge lasts for days. I also like that it lights up when you pick it up. My only nit is that the buttons aren't quite as easy to find by feel as on the 659. This may not be an issue unless you turn the lights down for movies as I do. Almost all my settings transferred over from my 659 and it controls my devices great!