That's the problem. Design wise, the CETME is a fine rifle, and probably more accurate than the Saiga. If the build quality on CETME's was good, they'd be the cat's meow, and this comes from an FAL guy. Yet, with bad build on so many of them, lemons are more likely than lemonade.
The PTR is a great rifle from what I understand, but considerably more expensive, pricey enough that I would recommend a FAL first. Yet, FAL is not in the poll above so I don't.
Get the Saiga.
Ash