I see you did say you wanted a synth that was not too expensive well the Korg MS2000 is now very cheap and i've had mine for over a year now and I use it in every track I do. The programming is piss easy and the results you get are perfect, build quality is a little flimsy but hey I doudt your gonna go touring with it. Still my favourite piece of kit is my Studio Electronics ATC-1 which is pure analogue sex and although is has no EFX and is only a monosynth and quite expensive I think it's worth every penny. Lots of people rave about Nord Leads but to be honest I think they are over rated for the money although the Nord Lead 2 rack has now come down to £550 which ain't bad but the Nord Lead 3 is £1300 which is a joke !!! I would say to get your ass down to your local equipment shop and spend a few hours twiddling them knobs and see which takes your fancy.

P.