I have a 6″ lazer hand auger that I used for about 4 years without any problems. I don’t have a lot of consistent spots, I like to move a lot, explore new places, and if I’m not on fish I’m outta there, so last year I bought a used power auger.
After about two weeks of drilling with the 8″ chipper blade, I ran to the hardware store and bought enough piping and hardware to adapt the strikemaster lazer bit onto the power head… I can tell you that a 2hp auger with a 6″ two-blade lazer bit pretty much cuts fast enough that you think it’s freefalling through the ice.
I’d recommend the lazer. My experience with it has been nothing but good.