We had some issues with the PPK-like FEGs at the shop in 9x18 - they didn't hold up to a lot of shooting in 1 of 3 sold.
In regular Makarov, I'm all for them with a few reservations. 1, the weight for what it is. 2, the trigger, and 3, their damnable ability to rust in carry situations. I have a secret stash of 9x18 Gold Dots, so ammo isn't an issue. However the weight generally is - it didn't sit well in my pocket. Now it's mostly a range curiosity or a BUG of a BUG or a throwaway piece. The issue I've always mentioned to folks wanting to buy one is that the ammo isn't necessarily available everywhere, so if you're the type to not stock up....
The CZ52s I can't honestly recommend for carry purposes. Some firing pins are brittle, and wear makes some of the decockers eventually turn into firing monsters. If one can be found cheaply (they were when they were available a few years back), the CZ-50/70 PPK-esque .32 is reliable in my experience, even if they do come with the world's worst DA trigger pull on the first shot that makes the safety almost moot.
In other budget carry guns, I've used TT-33s and their Chinese brethren before without issue - they have a lot of the same thin as a rail advantages for carry as a 1911, but again, rust is an issue. I also wouldn't have any problems recommending one of the cheaper Star 9mms that SOG has been dumping for a while, or even the Zastava M70 in .32 if budget was a real issue. The M70s have been good sellers and run just fine, and recoil is not an issue due to the steel frame. Again, I'm not fond of the caliber, but well, on a budget, gun is better than no gun.