2-XPA100 or 1-XPA-2 EMOTIVA... WHICH????

I am considerating purchasing Emotiva Amp or Amps.
My basic system to date:
2 AMP Europower EP-1500 Bridged
1- PRE-AMP Sumo Athena
1.6 Magnepans
1- HSU 350W Self Powered Sub-Woofer
Source: Vinyl Format.(NO Turntable at this time)
Music: Steely Dan, Dire Straits , Sade ETC.

Starting the up grade process. Current AMPS Powerful But Not Musical.

Question: Would I be better served with:
2 XPA100 Monos 250W
or
1 XPA-2 300W
As my future AMP choice?????

Thanks