The Hyper 3 is an awesome piece of machinery for sure. As far as underrated goes, I'd say the Neotat Vivace. I have no issues performing any task with them that I want to. They push ttech beautifully and damn near completely silent. Weight and balance feels about as close to perfect for me as it gets. I've yet to find another linear/slide type machine that I like better.

I also feel the Stigma Bizarre V2 was fairly underrated as well. I have ran one regularly for almost four years and it has yet to fail me. I mainly use it to pack/whip with the give completely closed. I have tried a lot of rotaries over the past few years and it is one that I could never be without. If something was to happen to it tomorrow, I would immediately replace it.