The P99c is my conceal carry gun. When carrying a gun - its the length of the grip that makes it harder to conceal. The grip is what sticks out from your waist. I had a Glock 26 for 8 years until I "discovered" the P99 last year and ditched the Glock 26. So, for concealed carry, I like guns that size.
But for fun to shoot, accuracy, feeling best in the hand - the fullsize is where its at.
Heck, I got my compact P99 in Oct 05. I have 862 rounds thru it. I got my fullsize P99 A/S on June 29, 2006. In 6 months, I already have over 1500 rounds thru it. And, my SW99 was bought in Nov 05. I have almost 1400 rounds thru it.
So, while I love the compact P99 better than any other compact gun - the fullsize models are my fav - I can shoot my SW99 and P99 A/S fullsize as well or better than I can a 1911 govt model