my 0.02.........go REVO. I had both (apr/revo) and I like the revo chip MUCH better....I have an 03 gti and when I just had it chipped I loved the revo. My buddy Ben actually does the revo chipping around here, he lives in Va. Beach. I would go with the SPS3, it gives you the most tunibility (sp?). go to the revo website and look for him.... i think his website is euroautotuning.com......check it out!!!!