To answer the original poster's ?
I've owned at the same time the 60II, the 3000, 4000 and 2kxl.
I gave away the 2kxl so I dont consider it.
I use the 4k mainly. It has the greatest feature set of all MPCs for my needs.
I like the 3k and it sounds great, but part of the problem with comparisons between 3k and 4k is that the 4k is usually truncating the beginning of the sample if you don't go in and change the adsr setting. so it's likely to lose in punch every time.
My 60II got flooded in Katrina so I can't say much on it.
Out of all of them, I'd choose the 4k, but it's HUGE. I like the 3k's but the 4k is more compatible with how I work today (24 bit files in pro tools flying samples back and forth over USB)
When material gain becomes the god before which all must be sacrificed, even one's own humanity, all manner of crimes and pursuant justifications become possible. And when crimes become heinous enough, as in wars of aggression, genocide and enslavement, the perpetrators have little choice but to dehumanize their victims.--Dr. Joy Degruy Leary