You could try the Rolandclan forums and also consider picking up a used Sonic Cell. It's been discontinued but the soundset including the GM bank is very good, I have one. I think the sounds are pretty much the same with the SD 50 but the Sonic Cell has a lot more features that you may or may not care about. There's a lot of youtube vids on the SC.

I don't have the Ketron but I've heard lots of demos because Mac posted a bunch of them here a year or so ago using Biab demo songs and it sounds really good too. I think you would be happy with the sound of either, it may depend on other features that you might like.

Bob


Biab/RB latest build, Win 11 Pro, Ryzen 5 5600 G, 512 Gig SSD, 16 Gigs Ram, Steinberg UR22 MkII, Roland Sonic Cell, Kurzweil PC3, Hammond SK1, Korg PA3XPro, Garritan JABB, Hypercanvas, Sampletank 3, more.