Hi Farkas,
I can REALLY recommend that XAOC Sarajewo you've been eyeing anyway. When you sync it to your PAMs and then step modulate the delay time... man - so many interesting and harmonically rich sounds! And a very hands on unit with absolutely no menu diving involved - which I love!
If you want to put some polyphony into your rack (and maybe sell some of your "outrack gear") I'd recommend Subharmonicon - best inspiration and harmony machine ever! Though it's 60 hp and carries a hefty price tag... Instruo Harmonaig and Saich make a great pair as well. I find it pretty handy to have those polyphonic elements integrated in my rack, but I guess you are good with your external polyphonics, so never mind ;-)