Big 5 is difficult. They really lack customer service.
But they do carry the M-44 and M-91/30 Mosins quite often. And they can usually be had for around $100 or less. Gunnies also carries them, and they usually have a decent selection. I've seen ones with laminated stocks, and the normal wood stock. You pay a little more for the lammie, but they sure are nice.
The ammo for the Mosin tends to be on the cheap side of things. I paid about $5 per 20 rounds last time I bought ammo. FMJ ball rounds. Surplus from 1957.
It shoots the 7.62X54R cartridge, and the recoil is easy to handle. Unless you're putting 100s of rounds downrange all at once. Ballistics lying somehwere in between the 7.62X51 NATO round (.308) and the .30-06 Which is plenty to take down rocky mountain elk.
If you get a good one, they tend to be quite accurate. Just make sure to inspect the crown of the muzzle and the barrel. Also, clean the chamber up real good when you first get it, or else you may have the bolt stick on you. Dang things are usually full of cosmoline.
The Yugo Mauser shoots the 8mm Mauser round, or more correctly the 7.92X57mm IS. At least, that is what the Germans call it. The round is a great round for large game,but does tend to have recoil akin to magnum cartridges.
IMO, the Mosin would probably be the better buy.