I've had an ION since they first came out. Nice setup but IMO the blades suck. I actually had one just break in half, just cutting ice.
I posted on the other thread, but I pickup a Kdrill/Milwakee setup last year and IMO it's way better than the ION. I never did like the safety button on the ION and this setup drills better than it also. You will also need an extra battery for the ION (at least we did even keeping the batteries warm). Those are $150.
I went with the 8" auger.