I personally prefer the A3000D because it's not a bloated monster in size but packs a punch and is quick on it's feet, except for AGA, it's got everything and more (Zorro3, A4000 Fast slot, DMA SCSI and FF/SD).
It's kind of the Fedor Emelianenko of Amigas.
Both the big Towers strike me more as Kimbo Slices.