That comparison is actually what I'm trying to do. I have a nitro XB8, a conventional direct drive brushless XB8 and now I am working on the brushless elektri-clutch version of the brushless xb8 with mechanical brakes.
This elektri-clutch version is hopefully the "best of both worlds" Brushless power and speed and convienience, with the nitro low end control and adjustable brake bias. I will be adding a little maintenence with the clutch but nothing comes for free.
I'm looking forward to taking all 3 to the track at the same time and see which allows me the fastest times. I already know which one it wont be
the reality is my driving is the limiting factor on all 3, but the easier it is to drive, the better I can do.
