A500, for me, as I never used a real 32bit Amiga.
I was a teen, and used it for games.
Now, I have a A500, A500+ (with Kick 1.3 [??]), and a A2000HD.
I'll try to upgrade it a little (acceleration, more RAM, and - why not - ethernet)
Or perhaps I should buy a A1 or a Pegasos ?