nice, i've only heard good things about the 1M
just from what i've researched, ESS tests the shit out of their kits before releasing them to the public (something like 50k of hard driving on the final product) and also uses intercoolers on the higher hp applications while VF doesn't. not only that but ESS tends to be slightly less expensive.
Yeah I just ran a search for ESS vs VF and found a bimmer forum thread about it, most people seem to go with ESS for that very reason. Plus they seem to have a lot more options available to fit a wide variety of budgets.
This M3 on their page is
I have to get the car first