Wolf - local manufacture, local (24/7) support.
It will set you back around $2500, installed and tuned. In that, they keep the car for a week to get the cold starts working correctly as well.
The results you will get are only as good as the tuner. So, no matter which ECU you choose, get it tuned by someone who knows the unit. All Wolf tuners (as listed on their website) are trained by Wolf.