HF tools are definitely all about research. I can't say I've been disappointed with any of my purchases except for the black and orange reversible clamps. Many very highly rated items there, including the drill presses, air compressors and etc. The router bits I bought there have more than paid for themselves. The biscuit joiner is very good, with the possible exception of the fence. The clamps have been mostly great.
I've gotten so much from that store that I wouldn't have bought otherwise, and can't say I have any regrets over any of my purchases.