I bought a Studiologic VMK-188
http://www.studiologic.net/vmk-188.htmlin December, and I must say I am quite dissatisfied. The keyboard makes a lot of noise, and the velocity response is uneven: I can't play a scale without some notes popping out -- I have no problem doing so with a normal piano. Another annoyance is the combined pitch-bend-mod-wheel joystick, because sometimes you need a mod wheel that sticks to the position where you put it and doesn't spring back to zero (which the joystick always does).
I tried the CME UF8 in a shop and found the keyboard action very noisy and rickety -- too bad, the other specs and the price are very convincing.
I had the opportunity to try one of the Doepfer keyboards in a shop (only after I bought the Studiologic [:(])
http://www.doepfer.de
which impressed me a lot: the keyboard action is excellent, and it is very sturdily constructed. They are, however, quite expensive -- the top model is 1300 €.
Has anyone tried the Oberheim MFC3000?
http://www.viscount.it/product.asp?idcat1=-250368922&idprodotto=1296180404
Looks very interesting and has got excellent reviews:
http://www.paulvickers.com/index.php?oberheim
http://www.soundonsound.com/sos/nov99/articles/oberheim.htm
Cheers
Pitt