MOTM

Hi all, 

I'll be getting the 650 midi->cv converter someday. I also 
own both soft (Logic) and hardware (QY-700) midi 
sequencers. I like the idea of dedicating the QY (this is a 
16 track midi sequencer) to the MOTM system, giving me 
control over a max of 4 voices (restricted by the 650). 

I now wonder how the 600 uSeq performs when compared to the 
650 + QY combo. In other words, why would I get the 600 if 
I have the 650 + midi sequencer? 

Thanks,
Robert