I own a 161 in 1 MVS cart along with a ton of actual mvs games. I can't tell the difference when the games are running. Only problem is you can't save hi-scores. Well you can but it's limited and it usually resets after 8 games. One other thing is all the games are default to level 8 difficulty. So you'll need to change that in the soft dip setup. As for games, Aero Fighters 3 is unplayable on the 161-in 1 but that's not a crazy expensive game on MVS. Also, Samurai Showdown II's sound seems off compared to my actual MVS cart. A couple of the hacks are worth it for unlocked players like SNK vs Capcom Chaos. It's nice really only if you have people over and want to change games, then again if it's a 4 slot you have it's probably not that big of a deal. I was pleased with the 161-in-1 cart, but some have had their carts sound die. Mine still is going strong in my MV1-FZ.