I picked up a new K100 MK7 off of Gunbroker this winter for a very reasonable price after reading good reviews about them.
I found a Ready Tactical holster for it for sale on this site, found some new sites and more 17 round (expensive) magazines at Dawson's.
I started shooting Glocks regularly last summer and improved quite a bit over the summer. I took the K100 out last weekend in the cold and snow with my heavy parka, on so it was just shooting at some targets I put out 15 yards in the snow bank. Shooting my 124 gr reloads, it was like, wow, this sucker shoots straight! Two magazines only, but both were right on target. I think I will enjoy getting used to this new shooter come spring time as I see a lot of potential for more improvement with it.