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

Help me, guys, I`m stuck! I cannot demo the Emu mp-7 nor the Yammie 
RS7000
I own a roland mc-307 and a korg es-1 (I liked the sounds, patterns 
and grid recording better than on the rm1x - checked them side by 
side.) I do hiphop, jazz, r&B, Latin, need good drums and some 
realistic sounding voices too. Now I wonder if the mp-7 or some other 
alternative could be a competitor for my mc-307, because I feel the 
drums have a punchy sound, but the feel of the groove is 
somehow "stiff"... 
1. Would you switch to the rs7000 to have it all in one box with 
sampler, efx etc. or go for the Emu mp-7 for its better sounds, 
usability, velocity-sensitive keyboard but weak efx-section. The 
problem is, I can´t demo the gear in my area, only orders... :-( 2. 
Is it an easy to use all-in-one composition station, easier to work 
with than - say - the rm1x or the mc-307? 3. Is the sound quality 
above the mc-307? 4. Is the grid recording as well implemented as on 
the mc-307? 5. Is the efx-section to limited because of its few efx-
types, that does not handle every track on its own? 6. Are there 
realistic sounding voices like piano, upright bass, brass - I heard, 
the mophat-engine does not include them. 

mp-7 owners, mc-307 owners, please? Any educated opinion would be 
welcome. 

Peace 

Heinrich