thanks again guys for the helpful comments
in all honesty i think im one of those virgin 1/8 brushless speed freeks,lets be honest most of us are or were, we see the vids on you tube etc of these 1/8 speed demons & we think Mmmmm i want to do that, yeh great for show boating & impressing the neighbours but insanely quick isnt going to be a race winning formula but then if i do go down the 4 cell route i will always wonder what a 40c (if it is a genuine rating) 5 cell would be like
edit-
I went for the lipo that 'BRS' suggested. wanted to order the 4mm connectors to go with it but out of stock
didnt want to cut the plug off the lipo really & i have read good things about the stock 4mm bullet connectors.