It doesn't sound like you do any real serious work with your Amiga. If it is pretty basic use and the occasional game, the A2000 might be the best one to keep.
Is the A3000 up to date chip wise? (so there are no Zorro III issues, etc) and stuffed full of RAM? If yes, maybe I would keep the A3000.
Do you still have the A1000? That would make a difference in my final decision too.
I would most likely keep them all!
