EX 5 over xp.
xp is great (also with is jv cards) but hardware wise ex is more solid and (think about fm,breath controller inputs) etc.

ex series are before motifs.
xp series are before fantoms.(xp pros-rps,direct disk play,more rom boards)-

both are great but i would prefer ex.

but piano wise xp( preset A001 64 voice pno is a killer).