Hi Pete,
As far as I am aware, it will be almost always 2cell lipos for 10th scale, I think most of the brushless speedos suitable for 10th scale, will always require 7.4v which is 2 cell lipo. I think when you go up a scale to 8th brushless, you then start to get into 3 and 4 cell lipos.
Wouldn't say theres ay drawback.
Sorry about the videos
I can't help making vids now, its sooooo easy on the mac.
Hope you can manage up to EK a few times at least, but Falkirk is a blast as well, with the weather the way it is just now, Falkirk is definately appealing for sunday afternoons.
Raymond.