I'd go with a Polish M44 with everything else being equal. They do seem to be more refined (relatively, it's still an M44 after all) and have nicer wood. On the other hand, I really like that big Russian star on top of the recievers of M44s made at the Tula arsenal.
However, you'd probably be best off just getting whichever one is in the best condition with the lowest use. A refurbed, unissued Hungarian would probably be a better shooter than a "good condition" Russian.
Watch for wear on the muzzle, bore and especially the chamber throat. Also keep an eye out for rough or pitted chambers which can make extraction difficult. (this is mostly true for semi-auto milsurps, but a lot of folks complain about extraction issues in Mosins when shooting some ammo)
None of them should be avoided just because of who made them. The M44 is a simple and robust rifle no matter where it was manufactured.