I got the Megacycle custom ground street cams in my 03 Speedmaster. They give a smoother mid-range acceleration but I cannot for sure say they were worth the $$$ they charged to regrind a set of my cams. You can probably buy a set for the same price.
I am in the school of thought that the 790 cams are the nuts already.

A word to the wise is not necessary. It is the stupid ones who need the advice. Pat