Best ice auger SHAFT for use with a cordless drill?

[wiperhunter2]

I know this will be something like a Ford, Chevy, Dodge question, BUT I'm definitely in the market for an ice auger shaft.  I've been using my blue 8" Mora auger for over 30 years. It has cut thousands of holes.  But my shoulders are telling me this won't be an option in the future.  I've looked at countless videos on YouTube talking about all the pros/cons of the various auger shafts to use with a cordless drill.  Now I'm asking for YOUR help to spend MY money!   What auger shaft are you using?  Why do you like it better than others? This is one requirement:  I plan to drill overlapping holes and I definitely want an 8" size.  Here are what I've looked at:
Kdrill
Strikemaster Lite Flite
Nils
Eskimo Pistol Bit
Jiffy Torch

THANKS in advance for your opinions!

Scott, once you switch over to a cordless drill and auger you will wonder why you did not do it sooner. If money is not a problem, I'd say go with the Kdrill and a Milwaukee fuel drill, at least that is what I hear from those that have them. Before I heard about them I bought a Nils and have been happy with mine, this is it's 5th season, I bought mine for $100 but it makes a big difference on the motor you buy to power the Nils. Ira and I both bought our Nils the same year, mine is a 6" his is a 8", he has had to replace three drill motors during that time but he did not buy a DeWALT. I'm still on my first motor, a DeWALT that I got for $100. IMO the drill motor has to work extra hard to drive a 8" auger vs a 6" auger but that is just my opinion. I have never had a problem getting a fish through a 6" hole but I can see that you might because you fish at BL and the Gorge. Hope this helps.