I guess it also depends on what kind of way you record. Step Edit patterns, or real time recording. I read somwhere that the mpc1000 step editing is a pain. I was also under the impression that you can use the MD for controlling other gear, so that in itself is a sequencing sampler.
Or theres this Signal Arts Maps sequencer that Dangulberry brought up earlier. Looks very nice.
MAPSOther alternatives would be getting a Yamaha rs7000 and add an external drive for samples. Woulnt cost much at all, ive seen rs7000's for under 500. That way you can sequence, sample and even use the interal sounds if you wish. Not a bad machine really.
I do agree though, I wish elektron made a dedicated sequencer. Or a dedicated sampler. A nice small tabletop sampler, no sequencer in it, just alot of space for samples, and the ability to mangle the samples.