Looking for a bench vise, or a barrel vise? They are two different things.
For bench vises, either buy a new Wilton (big $$$), or hit some local garage and estate sales. I don't even remember the brand of vise I presently have screwed to the workbench; my grandfather bought it from a garage sale when I was barely out of diapers, and since it had already survived a good half-century of use in someone else's hands, there isn't much likelihood that I'll find a way to break it. Still trying, though.
I have the Wheeler barrel vise. The included wood blocks are terrible, so I machine my own from aluminum to the size required by the project.