Brushless system upgrade

[jackeltrader]

Hi Guys,
I am fairly new to racing 1/10th off road after a long absence and I currently run a stock brushed motor & ESC in my kyosho lazer ZX5. I will soon be looking to upgrade everything to a 13.5t brushless sytem including esc & obviously lipos for local indoor racing but I am finding it a mine field - local modelshop is a no no as they just want to shift their stock. I am at a loss as I want an ESC that will last as I progress to more powerful motors for outdoor racing & tunning etc. Could anyone give me some pointers - I know alot of brands make excellent gear but how to choose them apart is just too much for me right now....any advice would be much appreciated, sorry this is so vague guys!
Cheers