Re Big Synths. I've had a Behringer 2600 for a few months. 450 UKP. And more features than the original, 3 VCOs + LFO, Ring Mod, Voltage processor Sample and Hold etc. Plus fully integrates with Euro Rack.
And like the original being semi modular and fully patchable not overtly 'musical', which maybe is the downside if you want tunes straight out of the box.
OK so the coloured lights on the faders are a bit OTT, but you can turn them down / off.
Still looking out for one of these cheap... people on ebay all seem to be trying to get 2x the new price for 2nd hand ones even tho there's no shortage of new ones in stores!?
read up about the different models, the blue and gray ones have real spring reverb but I don't know if that even matters or if mediocre digital reverb might be better for noise anyway :) and people's comments/reviews suggest there's a slight difference in sound with the original christmas tree lights version being more 'harsh' maybe