#Chip upgrade
There'd be little point in keeping both the '030 & the SupraTurbo28. You want
the original 68000 for compatibility (mostly old games) and the '030 for the
speed for anything that'll work with it (most everything nowadays). Why would
you want anything in between?
However, my trusty old A1000 could use a little boost if you're willing to dump
the Supra Turbo cheaply (the A1000's not my primary machine, so I'm not going
to spend a lot on it). Otherwise – good luck! 😉