I started collecting C&R about seven months ago and have somehow amassed nearly 2 dozen on a pretty modest budget.
IMHO the best bargains are: 1) CZ-82 (prices are rising but a few can still be had at bargain prices; reliable, fun, accurate, easy to maintain, CHEAP MAGAZINES--something you should always research in older guns before buying).
2) any of the old Berettas from the 40s-50s. I own two 948 22LRs (bought one and loved it so much I grabbed another because I knew the prices would be going up fast--accurate, reliable and easy to take down and clean); Beretta 1934 380; 1935 32acp; and Beretta 951 (9mm parabellum). All of them are incredibly accurate and reliable and fun to shoot. The 380 has some recoil (big bang, small gun) but the others are very smooth. The (highly under-appreciated) 951 has the biggest bang but is big and heavy compared to the others with a nice long barrel. Not a CC gun but fun and accurate, a great range gun.
Magazines for the 1934 are still easy to find and fairly cheap. If you're patient and watch the auctions mags for the others pop up now and then. The 948 is the only one that's tough. The mags are not too scarce but there were a few variations of that model so fit can be a problem. Otherwise the 948 may be my favorite pistol of all. Today at the range I put 8 of 10 shots into the head of a man target at about 25 feet. The other two just missed. If I were a better shooter I could've probably put every round in his nose.
I also just shot my little Sauer & Sohn Model 1913 today. I was surprised at its accuracy and it was great fun to shoot--after the slide bit me hard on the first shot and I learned how not to hold it.
I also love my big old Colt revolvers (two 38 specials and a 32 snubbie). Got great buys on all three by being patient and keeping my eyes open.
Most beautiful gun I own is a Star Model S 380, like new nickel (starvel) finish polished like chrome, nice ornate grips. A safe queen. I did grab a few NOS magz in case I ever get the itch to test her out.
I have yet to shoot my Unique 22LR Model 52 but am looking forward to it. It's a meaty compact, looks to be extremely sturdy. Feels great in my big paw.
If I could only own one, I'd choose the CZ-82 for its higher capacity magazine, overall reliability and economy. Snobs might dis its finish, but that finish protects the steel with less wear and hassle than maintaining a blued gun. And it's easy to touch up if you need to.