Tried searching, found a few things, but this is a bit of a different topic. Sure, synths are ghey, but computers and midi keyboards are cheap, and you can make weird sounds with them. I've got a used midi keyboard, an old desktop, 3 years of a 4 year physics degree, and no playing skills.

So... I love ZynAddSubFX, I've played with Mx44 (which is pretty cool), and a few other things. Any other prerolled GUI synths (not samplers) that anyone could recommend?

Also, I take it Csound is more flexible than puredata, but is it worth the text-onlyness and learning curve? Is it worth checking out SuperCollider or Chuck?

By the way, if you want a softsynth, ZynAddSubFX kicks ass. Really flexible, and has some strange "fourier synthesis" mode that can make really dissonant sounds. FM modulation in the additive synthesis does end up with some aliasing on occasion, and you can't tweak parameters much in realtime, but those are my only complaints.

Hi, you say you have used pure data? How is this to use?
I try this pure data program once and say to self, I must have 3 years of physics degree to use this.

This is what you try?
http://en.flossmanuals.net/PureData/SimpleSynth

Ooh, looks like a decent tutorial... I can't really say how good it is, as I haven't really done anything in it, but it looks really nice for real time stuff. I don't know where to get started on doing a polysynth though, aside from slowly learning.

I'm not a big synth guy myself....in fact, hardly at all.....but I can redirect some very high recommendations of Supercollider made to me by smart people who know much more about the field than I do.

Particularly if the output of apps like reason, flstudio, sonar etc ultimately bore you....SC can do some much more interesting things, like being able to introduce indeterminacy into the synthesis process.

Check out their sourceforge and wikipedia.