Lots of people complained last year about the cast end of the ion x drill freezing up with slush. I have heard they were working on a different coating to improve this. I am on year 3 with the normal ion with reverse and zero issues or complaints.
I bought the Ion second year out no problems with it just upgraded to the x. It does start cutting quicker due to the center point other than that same thing just bigger AH battery. I got mine for $500 at Duluth sport show. I also drilled 88 almost got through the 89th on a single charge with the X in 18″ of ice.