Do you mean 'all the roms' as in 'all roms of the originally released games'? Both carts have almost all original games, with the exception of AnimAction. (Unless the final version of the VF has that program on it...)
If you want to have the freedom to put new homebrew games on a cart, a flashcart (like the VecFever) would be the better option. If you only want to play the originally released games (and a few fixed homebrews) and if you aren't interested in the extra's that come with the VF, then it's probably better for you to get Sean Kelly's multicart. But to future proof the Vectrex a bit: I recommend you to go for the VF instead, because you might want one later on also, you get 3 exclusive built-in games with it, and as far as I know, there are no separate releases of those games planned yet.