Incredibly short edit window limitation fixup:

In a IIfx or any machine with at least three NuBus slots (two with MoBo Ethernet) I see the choices outlined above as being close no-brainers, all things considered.

For your 610 however, that's a very tough choice considering the dearth of expansion capability. Personally, I'd worry more about the other machines in the lineup and chart the same course anyway, especially if you don't consider a more capable (not faster) NuBus VidCard a necessity.