Most likely both rifles, since they're happening at the same time as other surplus distributors are getting them, have been rearsenaled (headspaced/checked) by their Russian Importers/exporters. Same goes for the Yugos.
Both are great guns. Both 8mm and 7.62x54r are plentiful and cheap and not hard to find accurate (Yugo 7.62x54r 80's and 8mm 70's production are considered close to match grade).
The Yugo Mauser is probably going to give you tighter groups.
The M44 is a more simple weapon, easier to work on and has a perm-attached bayonet (although you can remove it).
They both kick like mules. Both are reliable as any rifle could be.
It's up to you, you won't go wrong with either, you'll just save a little more with the M44 but as the saying goes, you pay for what you get.
-mark