Agreed, it's getting crazy trying to keep up. What do we have so far? Bren's upcoming tune, Max BMW, ECU Unleashed, the "guy" in California, Rapid Bike, and not to mention the one company in the UK that was advertising a tune on the forum for a short while that never panned out. In actuality, we don't have anything because nobody has reported any real world feedback or hard numbers so that we can make an intelligent decision (though Max BMW has a raggedy and
barely legible dyno chart).
There are already a couple of posts on the forum with people who have sent their ECUs off to various places, one seems to have had good results, and the other got a jacked up ECU back. This is still in its infancy by non BMW entities, I'll wait for a few guinea pigs to try out the various aftermarket tunes before I jump. Of course the HP Race ECU tune is still a guaranteed option but I'm not impressed with its gains, nor Max BMWs for that matter. Bren has promised a vastly superior tune, so we shall see...