I have a new ZPAP M70 and have been happy to date. I made a few changes to the OEM configuration, as it was a little bit of a "cheek slapper" as some of these tend to be. I changed the muzzle brake, added a higher-power recoil spring, and added the Shepard's Hook pin retaining mod to round out the changes. Total spend: ~$100 for all three.
So far, so good. I have about 400 rounds through the rifle so far. I have had 0 malfunctions, and the slap is far reduced. Shooting is effortless and comfortable, even with my cheek further back on the stock where it is most comfortable for me ergonomically.
I have been pleased with the quality of workmanship on the rifle, the finish, and overall assembly. I have this purely for recreational purposes, so I won't be torture testing or anything like that, but to me it is a nice build, shoots well (and accurately), and is a blast.
There is much strife in the AK world (just like several other communities...Glock comes to mind specifically) where people get awfully twisted in the minutia of what at the end of the day is a tool, built like a tool, to be used like a tool. If someone wants a work of art, get $10k together, order a custom smith-built 1911, and call it a day. Otherwise, in my unprofessional opinion, arguing over the intricacies of a design meant to be built, essentially, as quickly, and inexpensively as possible, and that is ultimately disposable, is....well....perhaps a bit of a fool's errand.
One should purchase what appeals to them, as informed as possible, and go from there. Informed does NOT mean reading arbitrary internet opinions that hold little to no water (and I am not referring to anything specific, or even the video content above, just expressing in general).