Analogue systems

Hey everybody,

I'm really interested in some pieces of equipment but really don't
know what to choose for what I want.I'd like to purchase an analogue
synthetiser/module that allows me create simple and complex sounds
with a lot of flexibility.I have enough budget to get something but I
don't want to purchase a piece I won't use neither.

I've really liked the sound of all the demos posted on the AS website,
in the same time,i like stuff like moog voyager, Vermona perfourmer,
Studio electronics Omega 8, etc...

Is the purchase of a piece like the RS integrator system 1 could blow
away all the previous brands in term of sound ? Can I get away with a
Spawn and be happy with it ? or should I simply get a Minimonster tiny
EMS (RS-95 VCO, RS-510e, RS-500e in a box) ???

Please I need your advices !

Diesel