Many people slag off Behringer as being unreliable but all gear breaks,even the best, just read a few posts here on basschat. Many people slag off Behringer for copying but Marshall only copied a Fender Bassman to begin with and where ever you look you'll find comments like, this amp uses a Fender tone stack or similar.
Me, I love Behringer prices and have found Behringer to be reliable and do what it says on the tin, well, box actually. However, saying all that, I had a Behringer amp that I bought as a spare, it was allegedly 250w but when I actually tried it out, I couldn't hear what I was playing and that was with it flat out, so it went. It was obviously loud enough for the person that bought it though. It all worked OK and looked good. I use a Behringer inuke and it's great. Been in use for over a year and no problems. Love it.
Behringer, like quite a few other manufacturers, are optimistic with their wattage ratings, peak wattage as opposed to RMS, but if you take this into account when buying one you shouldn't have many problems. Also, try before you buy if possible and if it breaks, you can always send it back.