I wouldn't mind a Mac Pro and all the other latest Apple gear...but I don't have any real *need* for 'em. I'll focus on older machines instead.
Off the top of my head...
- Fully loaded and upgraded Macintosh IIfx.
- Quadra 700 and 840AV would also be nice, as they are so expandable.
- A Macintosh SE/30 with 128MB RAM, some form of expansion card in the PDS slot, and internal CF storage.
- A fully loaded G4 Cube would be VERY nice, but they will always fetch high prices on eBay.
Many people list the TAM, but in reality the hardware itself isn't very special, and the machine isn't much of a great performer. Shame Apple couldn't get a balance of good performance and good design back then.
I would list a few PowerBooks, as some were very nice to look at, but again the hardware didn't perform well (mostly), the displays were usually awful, and the reliability was questionable. The 5300 comes to mind - what an oddball that was!