Steve Taylor, Larry Norman, Randy Stonehill and Weird Al are my top four.
Yes I do own a copy of I Predict 1990 signed by Steve and Debbie Taylor, an original vinyl version of the Chagall Guevara debut from Germany, and the extremely hard to find Larry Norman Home At Last 2 LP set with exclusive cloth cover (of which only 50ish were made). So yeah, I am the coolest person ever.