Planning on upgrading the electronics in my revo...

[jnev]

At the moment, I am running a MM ESC with Koolflight UBEC, and a Feigao 9xl motor on a TrueRC 4s2p 8K lipo pack. I love this set up (besides for the hot motor) as it has been working perfectly for me for quite a while now. But I would like to go to a little higher quality motor and battery. I pre-ordered a MMM from RCM at teh beginning of May from the second batch, so once that comes in, I can make the order for a new motor/battery.

I have two options, leave the electronics in my Revo as they are, since they are working fine and put the MMM in my CRT.5 which is running 4s. Or I can put the MM ESC with UBEC in the CRT.5 (stock chassis... barely be able to fit it all) and put the MMM in the revo with a Neu 1515/2.5d running off 5s or 6s.

That brings me to my next question. Which would be more efficient? Running 5s on the 1515/2.5d and gearing up, or running 6s on it and gearing down? I am leaning towards 6s because it is only 36,630rpm, and if I ever need to show off to the nitro's, I will have the power on hand.

So if you guys can give me your opinions on what you would do if you were in my position, that would be great. Thanks!