i've got bluefin on my ed30 and am well pleased with it. customer service was second to none, you can revert back to standard anytime you want, you can immobilise your car if you are leaving it for any length of time, and you dont have to go anywhere to have it fitted, postman brings it to you. not sure on this next statement, but another bluefin customer told me it also resets the flash counter everytime you use it. i've only heard good reports about the other remaps you've mentioned, horses for courses, sure you wont go far wrong with any of them. Let us know which one you go for.