I bought this amp in 2008 as a practice amp I could easily carry anywhere without feeling like I was hauling around a ton of bricks - jamming with friends, traveling, etc. I like Orange as a brand, the Orange sound is pretty great. Aesthetically, it doesn't get much cooler than the, umm, Orange orange color. At the time I bought it I also liked that it had a headphones output, for quiet practice time.
Years have passed, and I gotta say I honestly haven't used it AS much as I thought I would. I'd probably say it's my needs that changed, rather than the amp being inadequate. Having said that, I'm not sure I'd buy it again if given the chance.
1) The sound is good, not great. It gets pretty loud for a practice amp, could probably handle a small-ish gig. Safe to say that you're not gonna get THE Orange sound. After all, it's a solid state amp, and it's made in China, not the UK. Distortion on it is good - it gets nice and crunchy, but nothing crazy. Would probably take pedals well, though I haven't tried myself. Reverb sounds pretty nice as well.
2) Build quality and durability isn't great - at least not in my case. Having handled the amp with care, and having kept it in storage for the last couple years, I expected everything to work just fine. I turned it on recently and BAM, hear a loud pop. Capacitor totally blew. Maybe I shouldn't be disappointed that something went wrong with the amp after ~6 years... the frustrating thing is how little I used it and that I took great care of it.