There's no doubt Roland is good stuff. I'm sorry they haven't come up with something better than the BK-5. I'm still playing my s910 and yearning for the G70. A new arranger board in that category would get my jowls a 'waterin. A marriage of the Juno and BK series would be interesting... Thanks for asking.
I like the RD pianos. Their smaller amps are great and I love the Boss series of products.