my $.02.
a Geforce 2 would be a GTS, as it was the first one (Geforce 2, that is),
Then came the Geforce 2MX, then the Ultra, then the PRO.
Now, I've never seen a pro with 32MB, but it's possible, the specs don't say you HAVE to have a 64MB Pro, and I think one of the OEM's (Dell or Gateway) actually use a 32MB Pro in some of their higher end systems.
That said, the Elsa is a nice card, but that is a bit pricey, just wait for it to go down, or just go for the PRO 64MB (Love mine)