I signed up for the Alpha but was not chosen. When it came out in Beta, a mere two or so weeks later, I installed it right away. I seriously thought this was still an Alpha release. Buggy is not the word for it. Bugged. I really think this browser has promise, but as is, I think it's barely usable. Extremely slow load times, when pages actually load (and I've tried it on 3g and Wifi) and the formatting is horrible.
I personally use Opera Mini. It's very fast and the closest thing to a desktop style browser. The only thing I use the stock browser for is google sites (i.e. Reader, image search, etc.) because they are specially formatted when accessed that way.