I'm on Vyvanse and find it quite helpful. I've been through most of the stimulants on the market, but abused most of them so Vyvanse is the only one I can use now.

I'd suggest you try Focalin XR. It's relatively little-known, but I found it to be very helpful. It's a more pure form of Ritalin's active component. I found it helped much more than Ritalin, and it is one of the best drugs I have tried.