RMS- garbage - too many blown engines and software issues (esp the E36 guys have some war stories)
ESS- good, but no low end
ASA- not to sure about this one, and the fact they use a fuel regulator is not reassuring (aka no software)
Personally, I would wait for the AA to come out in final spec and see what it can do. Also, JimC and HIOP tech should also be showing their faces this spring, and because they are positive displacement would have plenty of low end. I think they will all be about $5K too, which is nice. If you get a blower now, I think you will have wished you waited for these kits,their powerband will be much more useable.
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