All this religion drives me crazy, they're all great options depending on what you want.
If the Vampire V1200 was in regular production then I'd opt for A1200/Vampire for the best of all world.....still not a bad option if you don't mind the wait.
The V4SA was/is easier to obtain and over the space of a few short months my collection is now:
V4
A500 Checkmate1500+ w/TF536
CD32 w/TF330
Pi4B in old A500 case (stealthPi or Amiga Pi500)
Pi400..holy shit what a device!
Coming soon.....revived and re-capped A4k w/ an ReAMIGA CPU
..not to mention the MorphOS G4 machines brought back to life thanks to Wayfarer