If I cant get my Voodoo3 to overclock well, and/or I can sell it I want to get a good Videocard. I was thinking a GeForceII, but i dont know which.

I'd want one that I do not have to upgrade for atleast 6 months! (I do alot of graphics design and some gaming)
What is the best Geforce to overclock?
IF I get a GeForce2 MX what should I know or look for?

~~ SYSTEM ~~
566cel @ 928MHZ
128mb pc133 RAM
Voodoo3 3000
TV Genie w/FM w/ Remote
6X Pioneer DVD
Richoh 4X6X24 CDRW
(31C Idle 60C max load)