For personal carry have a springfield gi mil  but too darn heavy, and love the capacity of both 10 of 45 and 12 of 357sig which is better for personal carry and home defense.

Bought a G30 a while back to replace a G26 as a CCW but went back to the G26. The G30 is actually about the same dimensions as a G32/19 and a bit thicker in addition. The 26 is much easier to conceal. Also have a G32 that I use for classes and think it is an excellent weapon but there is significant muzzle flash, recoil and noise compared to a 9mm/ .45. Have you had a chance to shoot a .357 SIG? My choice for carry between the 30 and 32 would go to the 32 (easier to conceal)  but you would want to shoot the .357 SIG first to see if that round is what you want to use for CCW IMO.

I enjoy carrying the G32, 13+1rds in the same size as the G30. I also have a G23 barrel that I swap to shoot and carry 40S&W. You can also get a 9mm conversion barrel and shoot 9mm just to plink with. Either way you can't go wrong.  

I much prefer the G30 of any of the Glock frames.  Yes the 19/23/32 26/27/33 size guns are easier to conceal, but the .45 has a recoil impulse that is hard to beat.  As a bonus, that big heavy slug is going to do a world of hurt to someone who needs it.

Quoted: I much prefer the G30 of any of the Glock frames.  Yes the 19/23/32 26/27/33 size guns are easier to conceal, but the .45 has a recoil impulse that is hard to beat.  As a bonus, that big heavy slug is going to do a world of hurt to someone who needs it.

...and the .45 makes a bigger hole

Whichever fits your hand best would be the wisest choice.  You'll more than likely shoot it better, better fit means better/faster more accurate shooting............and only hits count.

The G17/34 fits my hand best of all Glocks.  Because of this my carry gun is a G31 (same frame size as the G17/17L/22/24&34/35).  Here's a pic of me shooting my G34 at a 3 gun match yesterday.