I think this has all become a bit daft when it makes no real difference at our track.
Up until recently I had always ran whatever in my Mardave, I actually quite enjoyed changing from brushed to brushless and back again and trying out different cheapo motors. It didnt really affect my lap times, just fun to try out different setups. Its one of the reasons I stuck with the Mardave for so long.
For the Supastox, I've recently spent £120 on a 1s system which performs worse than a silver can/4 nimh. I could probably do better lap times with my Tamiya Frog.

I've now spent another £100+ replacing this with a 21.5t and a set of 2s batteries which are now not going to be BRCA legal in a few months time.
I doubt I've spent this much on motors, esc and batteries for the mardave in the entire previous 3 years, buying cheap saturns, ezrun system and tipple batteries.
Anyway, as I'm now kitted for 1s and 2s, I dont mind, I just think whatever we decide we need to stick with for at least the summer and winter 2013 seasons.