Like everyone else have written here, I can only repeat that this instrument sounds particularly great. There is so much character and sound in this one, and after I powered it on for the first time I spend 1+ hour with the first patch alone. I am not a good keys player, but the keybed and the immediacy of the OB-6 changed that and it just keeps making me come up with new melodies and sounds. I play it often several times a week.
Only slight critique I have is that all the LEDs are dimmed using PWM - they are flickering and it is slightly annoying. Its not as bad as on the Rev 2, but it wouldn't have cost them much to add a handful of resistors to make a flicker free instrument. Also, the USB port is not properly isolated, so you need a 7$ chinese USB isolator if you want to use the USB port without hearing noise. These are minor issues, but they could have been prevented with ease.