I have .22's for plinking but I've been thinking about getting a larger caliber for self defense. I've tried a number of 9mm pistols at a range that rents but I havent found one that feels controllable or is easy to get back on target for the follow up shots. A friend has a CZ75 and I find it easier to shoot than other 9mm I've tried but that could be due to its weight. Not something I'd be able to carry or afford however. I find 38 special to be manageable and have shot these from a 357 snubby.
Can anybody recommend another caliber/pistol to try that would be suitable for carry?
The number of pistols and calibers that are suitable for carry are legion these days. That said, looking at your post, I'm guessing that you're after one pistol for HD and SD, suitable for carry and budget is an issue.
In revolvers -- I have a Ruger LCR in .357. I carry it with .38s, because I don't shoot .357s out of it very well. It 's a great little companion for Pocket Carry Days. I think I paid about $500 when I bought it 5-6 years ago, but I'm sure you could pick one up used and get it cheaper.
In semiautos, I think there are about a metric TON of pistols in 9mm that would suit your needs. Is your buddy's CZ75 the full-sized version? I shot a friend's CZ75 Compact and it was a very nice little pistol. IMHO, the "compact class" of pistols is the best bang for your buck that you'll find: Small enough to carry, large enough to shoot well. That would include the Glock 19, CZ 75 Compact, CZ P10C, S&W M&P 2.0 Compact, etc. All that stuff that has ~4-4.5" barrel, and holds ~12-15 rounds.
At the same time, there are a lot of smaller pistols that might serve you well, too. S&W M&P Shield, Ruger SR9c, M&P 1.0 Compacts, G43, etc.
I suspect that your best bet at this time would be to spend more time at the range, trying out different pistols. It's $ invested on the front end to avoid choosing something that you'll just wind up trading in later.