Akai Professional MPC Key 61 Synthesizer
Of course there is far more to the MPC Key 61 than that. e.g. 16 velocity and poly aftertouch drum pads, sampling, 25 included virtual instruments and the fully featured DAW. Plus you can fit an onboard SATA drive. And it sounds great!!!
Scouring all the reviews, there were almost all highly positive, except for the following few complaints:
1. The keybed - however I really like it! There is a slight clunk when you hit a note hard, more than my Yamaha PSR-SX900, but this makes it feel closer to a "real" upright piano.
2. Bugs in the operating system - it has reset itself once in 4 weeks of use, so not a major issue
3. Touchscreen slightly too small - it could always be bigger but it is perfectly usable eben for event editing
4. No onboard speakers - yes that would have been handy but it is nice and light and small as it is.
5. Projects take a few seconds to load, and while doing so the keyboard won't play anything. A slight annoyance for live use, not a deal breaker
I would add the following:
1. Only one headphone socket - so I got a headphone amplifier 1 in 4 out.
2. No great sax sound that I can find
3. A little quirky - e.g. you can only have 8 virtual instruments at once in one project, which isn't really a problem, but no way I have found of deleting them so you can add more!
4. The live performance set list system is not as easy to use or as slick as the Yamaha SX900 system
Bearing all of the above in mind - I would highly recommend this keyboard