Emu XL-7 & MP-7 User's Group

I have an Rm1x, so here's a brief comparison. Overall, I think Rm1x is 
a more powerful sequencer:
- you can have patterns of different lengths playing together. E.g. a 1 
bar kick drum pattern, 4 bars bass pattern and 16 bars synth line on 
top. It is even possible to mix and match different time signatures 
(wild! :)
- up to 16 variations which can be switched in real time - you can have 
intro, chorus, verse, buildups, breaks etc and then effectively remix 
your song live (that's why it's called "sequence remixer").
- up to 5 "mute groups" for quick muting/unmuting several tracks at once
- "groove grid" function: select any beats in a bar and shift them 
forward/backward, or modify note velocity/length. This happens in 
realtime.
- nice "midi echo" effect. Would be even nicer if it worked on incoming 
MIDI notes - as it is, works on recorded notes only.

The biggest shortcoming of Rm1x sequencer is that it has to be stopped 
between playing and recording, for any editing tasks, and for switching 
metronome on/off. Also, I've read that grid recording mode is 
practically unusable, since you can't hear the other tracks (haven't 
tried it myself). Grid recording on XL7 is fun ))

just my 0.02$
have a nice day!
Boris.