dont listen to them.
sfv is a very fun game and great for newcomers. its only the hyper competitive tourneyfags that are pissy because it doesnt have one frame links(who only the top1% could pull off) sf4 had and back then they were pissy that sf4 wasnt sf3. the street fighter community are fucking worse than the COD fanbase, they dont know what they want.
guilty gear has godlike core gameplay but its extremely laggy. if i were you id get the PC guilty gear since there is less input lag there apparantly.
sm4sh is straight up dogshit, skip that unless you want to play it with friends.