An honest answer... none of the above.
Since the n64 was the last of the cartridge based systems, the game designers used a lot of tricks to get the most out of the system. Unfortunately this often meant a custom microchip in each cartridge.
Translation: It could be years and years and years before the n64 emulators are even close to perfect. An example of this is the snes. It's what, 10 years old now and has been emulated for about 8 years. They still have problems emulating the few games that had that custom fx chip.
Your best bet is to buy a n64 and play them legitimately. Wrestlemania 2000 had two custom chips if I'm not mistaken... one of them handled the animated textures used for the titan tron videos and I have no clue what the other did but apparently it was important as the game won't run on any system.