a GF3 whatever is really a GF3,
a GF2 whatever is really a GF2,
a GF2 MX whatever is still a crapped GF2, something like Radeon VE to regular Radeon.
if you missed the $100 Visiontek GF3 Ti200 from Bestbuy,
this $70 exclusive to the US market Visiontek GF2 GTS-V (just lower clock than regular GTS) is the choice for budget card.
32MB or 64MB doesn't have big difference,
sdram is so cheap today, 64MB isn't anything wonderful,
those cheapy SIS305 vga card even put 128MB ram.
my opinions for the cheapest cards in newegg:
GF2 MX400 64M with tv-out $70 - not a good buy unless you must have tv-out
GF2 MX400 32M twinview dual vga with tv-out $100 - ok buy if you want dual vga
GF2 GTS-V 32M no tv-out $70 - the best buy but no tv-out
GF2 GTS 32M with tv-out $100 - if you must have tv-out
GF2 Ti 64M with tv-out $120 - better if you want to spend $20 more
GF3 Ti200 (MSI-8851) $160 - this is a good buy too - vga/dvi but no tv-out
GF3 Ti200 with tv-out $175 - not bad