Pro-53

First off, I tried the 52 demo around 6 months ago, and I was not all that impressed simply for the fact, the old style GUI had switches and the presets were a little above par,but once you understand a little about synth programming, and or, find some of the better patches available: whole different ballgame.
This synth is a pretty good replication of the prophet-5 synth, that was used ALOT back in the day.
the GUI makes sense if you read the manual and have some knowledge of programming, whether it be from other synths, or from reading.
The presets for the most part are great, but some sound weak, thin, and some, just plain weird (bleeps and wind type sounds).......but because of these other oddity sounds, this should show you, this synth is capable of making ALL types of sounds/instruments....from pads, to nasty leads, to a taser gun sound, sounding like it came from a toy gun.
Overall, for all the patches you get, the free update from 52/53, the additional patches around, and for the pretty damn close replication of the prophet type sounds.......it is a great value for the money....espically when considering, this is JUST the type of synth to make your own sounds with.
Not sure about the support, since I have had no problems at all registering this synth, downloading things for it, and or had any crashes. But for this, I would have to say their support is good, because I have not needed it at all.
Pro 53 has other really nice features such as the analog dial, which the more you turn it, makes this synth sound less digital and other nice options like saving patches as all files, or just single banks.......and for the fact you can make great sounds with it very quickly. Worth every penny.