I heard the GTS was nice and good.. and well the G4 is basically just a Geforce 2 chip so.. i dunno what difference it'd make..
the GF2 GTS would be better the GTS was the (second next) top of the line GF2 whereas the GF4 MX isn't that much of an improvement on a GF2 MX
I have a MX440 in my spare rig... not impressed... was never impresed... even when it was new. Agreed.. GTS.