Thanks for all the informative responses. I didn't realize the FP e50 was a closed system Style wise like the EA7 and that was one of the questions I had about it. I have all my Songs on my Ipad programmed to change Styles on my BK9 and I would hate to lose that function and start all over. I also didn't realize the keybed was so inferior to my FP90. I thought i was just a little different. I do love the FP90 and I do have it midied to my BK7m usually just for bass/drums. The FPe50 caught my eye at the local music store so I was curious but I now see its drawbacks for me. So I guess my studio setup will not shrink as I have the best of both worlds.
Thanks again for the info.