Saiga should be a good purchase. It's hard to beat that AK-style gas system for reliability.
CETMEs are cheap versions of the PTR-91 and HK-91. The PTR-91 is much better. Still, I don't see them beating the Saiga for utility.
Oh, BTW, did you guys see this past week's episode of Tactical Arms with Larry Vickers? They did the show on the FN FAL. It's amazing how DSA has so drastically improved the design. I will still never buy a FAL (just don't like them), but if I did, I'd definitely have to get a new DSA versus an older version from someone else.