Great review Fran. Of course, the E-A7 is solidly MOTL while the PA-4X is TOTL so comparisons must consider that. At the time, I wanted the harmonizer and better screen so I opted for the PA-900. Now that I am not playing out, as I had anticipated I might, only the screen bothers me. Roland OS and makeup tools are unmatched to me and the price is right. Pros like Dave and Don M. make a living playing music so they can justify the TOTL boards. If I had to choose now, I'd try the Ketron SD7 (although I think the OS is harder to use) because the rhythm sounds are superior IMO. Can't afford or justify the switch now as I am hardly playing at all due to other projects.