Welcome! Good to see more Wisconsin GPers!!
As far as what year, I prefer the 99 and 00 model years the most. They have changes from the 97/98 that I wanted and don't have the changes I dislike on the 01+ models. I've owned four 97-99s and might be getting another to replace my Comp G. No real problems with any of them. Good luck on your search. I'll let you know if I see any good deals in the area.
My current 99 GTP has 26,000 miles. My old 97 had 175,000+ miles when I sold it and no unreasonable issues.
