I just ordered a Rampage top - I reasearched tops for awhile now. I think that Best top quality is probably better and easier to install (less drilling), the top doesn't fold down without removing that i could find. The Rampage is a little cheaper, folds down nice, and it comes in colors, best top is only avaiable in black.
BC has an awsome top for $1500 shipped and does Can Back, but there frame work is permanent and does not fold. Basically there tops are a hard top, but the canvas can be removed.
I'm rolling the dice on the Rampage, if I do or don't like it I'll sure share my opinion.