Playing in the same place almost every night, I am constantly trying to stay "fresh".
It's not hard to do with some work, but one of the things I look for are easy ways to audition styles, even on the job (slow nights).
I love the Rolands, but so far the styles must be loaded into one folder. Then you must search for the new ones and try them, then delete the ones that don't suit.
Yamaha's S900 and up allows you to read directly from an external card, as does the Ketron Audya.
I suppose ease of operation is a paramount factor for me in considering a change.
I would already have purchased a Roland E-80 if it weren't for this factor and the glaring break/fill issue.
Still waiting for my Audya to be replaced by one from the latest batch, as soon as they arrive. Meanwhile the E50 continues to please and even amaze me.
DonM