Kit list expansion... recommendations please

OK my kit at present...

Well old PC running Sonar and Buzz
16 channel desk
Roland Alpha Juno 1
Roland MC202
Roland TR606
Boss DR660
Emu ESI32 sampler (2meg, no SCSI - eeek!)
Yamaha TG55
Fat Freebass (303 clone)
Elektron SID-station
Alesis Midiverb 4
Yamaha SPX50-II
Behringer Composer (compressor/limiter)

So what are your recommendations?
I'm thinking of either
a) Getting a new PC and Cubase SX or somesuch
I quite like the idea of using a laptop - can anyone recommend a good one for audio use?
b) Getting an Access Virus (everyone raves about them)
c) Getting a few more old skool synths - DX100 (for FM), TB303, etc.
d) Getting a Nord or other virtual synth

Cash wise I'm pretty strapped but have credit card will regret it later!

a new pc and sx would be logical or speaking of logical maybe a mac and logic 7