I couldn't tell ya as I have no experience with Mausers.
Mosins are a fantastic buy at $70-90: they are accurate enough for most purposes (though you may have to experiment with different ammo to find the kind your rifle likes to eat best), solid, reliable, dripping with history, and two of the three models come with a
freakin' bayonet that's as long as your forearm.
The "best" are Finnish Mosins - Mosins that were captured by the Finns during their Winter and Continuation Wars with Russia and modified for their purposes. They are accepted to be
the most accurate Mosins (the most prolific sniper in history, a Finn by the name of Simo Hayha, racked up somewhere around 500 kills with, among other things, an
unscoped Finnish Mosin) but are much rarer and more sought after than your average, run-of-the-mill Ruskie, and so the price reflects that. You should be able to find a few at EmpireArms.com and GunsNAmmo.com, starting around $200 or $250. The tiger-stripe stocks on some Finns are gorgeous.
Mosins are generally seen in three models: the M91/30, the M38, and the M44. The M91/30 is a full-length rifle and comes with a detachable spike bayonet. The M38 and M44 are carbine models and are about a foot, foot and a half shorter than the 91/30, if memory serves (I've got all three leaning in my closet if you want me to go dig them out and compare). The only difference between the M38 and the M44 is that the M38 has no bayonet, whereas the M44 has an integral side-folding spike bayonet. It adds quite a bit of weight to the gun and the only practical use I've seen proposed for it is as a stake: just stab the bayonet into the ground and the rifle's stood up and ready to grab should you need it while afield.
Surplus 7.62x54R is scarce, at least for now, with rumors of the ATF refusing to approve Form 6s for the importation thereof, but you'll probably be using commercial softpoints for hunting anyway.
I believe (feel free to correct me if I'm wrong, someone) that the Mosin has an advantage over the Mauser here: I've seen commercial US 7.62x54R fairly often, but never commercial 8mm Mauser.
There are a few "downsides," of course. The trigger is said to be not-all-that-great (I don't have a problem with mine; it's a mass-produced military arm, not a target rifle, and some people seem to have over-lofty expectations from their Mosins) and the bolt can be difficult to work, especially using lacquer-cased ammo like Wolf. This is caused by cosmoline gunked up in the chamber and is an easy fix: just chuck a shotgun bore brush into a drill and go to work on the chamber. Shouldn't take more than five minutes before your bolt works fine.
If nothing else, buy one as a range toy. There's still plenty of surplus ammo out there waiting to be brought in, and turning heads at the range when your Mosin goes
BOOOOOM is the most fun I can think of to be had for under $100.