Solid mounts are alright. I prefered the way passive mounts take tight corners. You get a much a much better turn in. Solid mounts are good for people who are nervous of the back moving as with passive mounts if you go hard enough it can feel like the backs letting go but it isn't. Or if it feels squirmy, go quicker. It'll stop. I don't believe that that the solids produce more grip either. They just give it to you differently.
********************************************************************
See the sheer power and might of the lesser known burrowing owl
********************************************************************