in terms of my own prefernce, and what id most likely to hold on to:
1 Roland Jupiter-4
2 Waldorf Q+ Phoenix Edition
3 Roland SH-2
4 Access Virus TI2 keyboard
5 Moog Minimoog Voyager Performer Edition
6 Clavia Nord Lead 2X
Jupiter4 just has fabulous liquid sound, so unlike the drier, focused SH series of that time (1/2/9). so its a great match and combination with SH-2. leave the bass to SH-2, do the leads, arpeggiations and chords with JP-4.
Waldorf Q+ is quite rare/unique, whos analog filter sound i can't say really blew me off the water, but still its better than VA filters. and all together, its a unique hybrid digital synthesizer, capable of some beautiful and complex soundscapes. that being said, i opted for Andromeda and the original microWAVE instead. i prefer those filters in a waldorf. even tho its not exactly the same thing, and microwave hasnt such deep complex arhitecture, but offers some other things sonically, plus a VCO andromeda which is a world of its own.
i love nord sound, but overall id probably keep TI2 over it. it all depends how much money you need to "free up" with sales. another thing you can do is, replace TI2 keyboard, and get a TI1 desktop instead. and save some money in the process.
not a secret that i'm not that crazy about Voyager. if you need trademark moog sound, and save money, agan, id opt for a Source. its truly warm and punchy. or some other small moog from late 70s. ymmv.