I have a 75SA currently. Its my only handgun. The next one on the list is a 75 Compact. This is my experience:
I struggled choosing between the standard 75B, P-01, and the 75SA. I thought the P-01 felt the most natural in my hand, but I couldn't get over the decocker. I almost got the 75B and then i found the SA. The SA had the slight frame modifcations of CZ's newer pistols(beaver tail, extended mag release, and shorter trigger reach). I went with the SA and I never regret that decision when I'm shooting it.
I do regret it when I'm not shooting it! Holsters for CZ pistols aren't common, and the SA, having a different slide, has almost no support in the holster market. The big ambi safety is great at the range but a real pain and liability for carrying. I'm in the habit of checking the safety whenever entering/exiting vehicles or getting in/out of a chair.
Don't get me wrong, I love the SA, but it feels more like a range piece than a good all around fighting pistol. And the pistol is bleep good at what it was designed to do... I just didn't pick the pistol designed for what I wanted. I plan on fixing that with the 75 Compact.
When it comes down to it I wish I had simply gotten a standard 75B. The new 75B Omega seems to be the "perfect" full size out there IMO right now. It has all of the frame improvements and a nice simple safety. A lot of forum members have said it has the best factory trigger of any CZ out there.
Best of luck. If you get the SA I'm sure you won't regret it.