G23 was my first. Compact .40 S&W, if I remember correctly I had 13+1 rounds at my disposal. I didn't much like shooting it so I got a CCO 1911 and have been loving it ever since as far as carrying goes.
First was Beretta px4 storm type d in 40 cal. Loved that gun but the huge slide release lever just was not right for me. I get bored with guns and trade them off though.
I started CC in 1999 my first Glock 33 357 sig still have it and carry. It's one of four Kel-Tec PF 9, S&W 642, Kimber tactial ultra 45 acp that are my carry guns just depends time of year and what I'm wearing.
First gun was a G27. Found a Kimber Pro Crimson Carry one day while drooling over the gun case after shooting. Got a good deal, so I traded it. Now I switch between that and a Kimber Eclipse Ultra.