Robbins, welcome to Glock talk. In leather IWBs for Glocks, I've personally had good luck with Ted Blocker, Mitch Rosen, Leather Arsenal, and Galco designs.
That said, though, when the holster is inside your pants, comfort is about as subjective as underwear. Best bet is to go to a well equipped shop that will let you try on multiple holsters with unloaded or dummy gun to see which works best for YOU.
Since you are (wisely!) looking for lots of input, and the GATE format is limited to an answer from just one designated advisor, I'd suggest you re-post this question in the Carry Issues section here at GT.