Good but Has Major Problems
I used to use the Edirol SD-20 back in the day as my sound bank. I wanted to upgrade to something better, and was hoping that the Roland SD-50 would be that answer. I was very excited to receive the package, FINALLY figured out how to get it to work and how to work the thing myself, and that's when the problems started. Overall, I really liked the sounds and was very happy with it for a while. (It should be noted here that the sounds themselves are decent, but that's about the extend of it.)
Later, when I tried to use it with my computer, the thing kept freezing up. I read about a patch that's supposed to help with an i5 compatibility problem, and I can't download it to the SD-50 because it won't accept any of my flash drives. This begs the question...why do I have to update it using a flash drive when it's CONNECTED TO THE COMPUTER with via usb?
Another problem I had with it is the fact that it can only save 3 preset instrument playlists at a time. What happened with the SD-20 method, having a software program that allowed you to save to the computer and choose your instruments easily with the mouse instead of fishing around with a turn wheel? This does get easier to use after a while, but it doesn't come close to the user interface that it should have. Roland needs to do their user research and observe people using it in order to see how this slows the creative process down.
Admittedly, I only really use it for its midi sound bank, hooking it up to my computer and keyboard so that I can use it with Cakewalk, so I'm not sure how the other features work. All I know is that it keeps freezing on me, has an unfriendly interface, and doesn't allow you to update it without buying a Roland thumb drive. At least it looks pretty, though.