I have one on my Shockwave. It has the same output specs as the TLR-1 HL and when I compare them side by side, I don't notice a difference.
Really not a fan of how it looks, and it does feel pretty chincy. I have my doubts that it would survive if dropped on concrete from shoulder height.
That all said, for the price it does a great job. I just can't say that I'd consider it "hard use". But in all fairness, I've never taken a class with it or anything to offer an educated opinion.