at what? being a stay at home mom? the first Aunt Viv will always be the real one.
Aunt Viv #1 had more memorable performances. I can't remember Viv 2 for anything besides just being a passive Aunt that was just kind of there. I at least remember that episode when Viv 1 did that impressive dance audition (to C&C Music Factories "gonna make you sweat") for all the young chicks, then waited til she got out of their view before she passed out and started cramping up
That was one of my favorite episodes for a while when I was young, because I thought gay dudes were hilarious back then. LINK