Hi Bill,

I have played on a Roland FP-E50 at our local Guitar Center. I agree that it is an all-in-one solution at an attractive price point of $800. I could see why you are thinking of trading all your gear for a simplified home setup.

I think the FP-E50 is Rolands answer to Yamaha’s popular DGX-670 that also retails for $800.

Since you already own the Roland FP-90 and two Roland BK9 Arrangers plus the Roland BK7m module I would like you to consider two things:

1.
Keyboard Action

The Roland FP-50 comes with Roland’s Progressive Hammer Action (PHA)-4 Standard Key Action.
This is significantly inferior to the PHA-50 Key Action that you have on the Roland FP-90. The black keys are harder to play closer to the top. Roland somewhat addressed this issue with the PHA-4 Concert Key Action that features longer keys.

I have the Roland RD-88 that features the PHA-4 Standard Action. I much prefer the PHA-50 key action on my Roland RD-2000 which feels luxurious, well balanced and easy to play over all the black and white keys. There is no comparison. I hate to go back to the PHA-4 action on the RD-88.

You will face the same issues when you compare the PHA-4 action on the FP-E50 vs. the PHA-50 action on your FP-90.


2.
Styles

As Diki has already pointed out, you are limited to the small library of onboard factory styles.
You already have the Roland BK7m Backing Module. Why not just MIDI this module into your FP-90 digital piano and enjoy the best of both worlds?

The FP-90 would give you a premium weighted piano action with escapement plus its gorgeous Piano voices with Roland’s Pure Acoustic Modeling engine. You can play all your Piano parts to the backing tracks of the Roland BK7m module.

The PHA-50 key action on the FP-90 feels better than the Kawai Responsive Hammer Action 3 on the MP7SE, better than the RH3 action on the Korg Kronos3 and better than the Graded Expression Action on the Yamaha Montage M8x.

I would suggest not trading in your Roland FP-90. It is one hell of a digital piano. It is not an arranger but your BK7m has you covered.

Best,

David