My current saph is running autronic. It is so much nicer to drive than my last saph which had custom maps on std management. Peak power may not be improved but what ive noticed the most is throtle response and economey is much better with the autronic.

You say you want to take your car to the next level. Aftermarket ecu's like autronic and vipec will keep you happy for many many years, no matter what mods you decide to make in the years to come. You only need to do it once.