I'm one of the people that listed mine before finally returning it. Bottom line for me was I wanted a third channel as I kept going back and forth between different gain settings and got tired of turning knobs. The gain channel was surprisingly versatile and was definitely capable of getting enough saturation. I think what is throwing some people is that unlike 99% of the amps out there the full sweep of the gain knobs is usable and the amp doesn't really get super saturated until you have them turned up past the point most people would use. If I hadn't looked at some of the suggested settings in the manual I wouldn't have realized this or found the couple of settings I like. It is also anything but limited to thrash and extreme metal tones, despite the marketing.
Since somebody mentioned it being picky about cabs, I was running through an Orange loaded with EVM12L Classics.
I will likely bring home a Randall 667 when they're available as this was definitely a fun amp to play around with.
As for the ZOMG CHINA! arguments, as for actual quality it is complete crap. You can certainly get complete junk built in China for cheap prices, but you can also get high quality manufacturing done if you're willing to pay for it. From my brief experience with the Thrasher, seems like Randall was willing to pay for it. If you don't want to buy something made in China for patriotic or labor related reasons that's fine, but the idea that it is impossible to get something quality built in China is ridiculous.