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

Folks
      I couldnt find a similar post and am new to this group. I was 
wondering if any of you had suggestions regarding a XL-7 vs. an MC-
505 unit from a beginners perspective? Which one is easier to pick up 
and understand? I am interested in trying some of my own mixes of 
other tracks/samples and then maybe trying something on my own.

thanks in advance for your help
vsr