I have a moderately expensive Taiwan small gauge ratcheting crimper for dealing with the tiny Molex edge card connectors used in pinball machines. After doing hundreds of crimps, I tried looking for a reasonably priced set of dies to fit the standard insulated and non-insulated terminals because the crimps from that tool are so much better than the el-cheapo crimpers, and I didn't find any that would be a direct fit.
I decided to try the HF one when it was on sale plus 25% coupon. Overall, it's OK - especially for $8 out the door. From a build quality perspective, it is comparable to the $30-$40 crimpers found in typical retail auto part/Radio Shack/ Big Box stores. I can't speak for the difference in the precision of the dies or output crimp quality between the HF and other brands.
The 'adjustment' on it is not variable enough if you are using the smallest gauge wire supported by the terminal - but that could be an issue with the die. If you are using the largest gauge wire supported from the terminal it does make a solid crimp. This lack of 'real' adjustment is the same on both the HF crimper and the Taiwan crimper.
I have no idea where you can get different dies cheap, but I'd like to know. Amazon sells Klein Die Sets for $13-$18 each, but I don't know if they would fit either of the frames I have. The Klein VDV205-036 die set is what you'd want for non-insulated terminals (if it fits). The HF crimper will absolutely NOT do non-insulated terminals.