I have a ThunderMax on a FLSTSE and I'm very happy with it. I don't have any good tuners around here, so I do it myself. The base maps that come with the software are a good starting point. The autotune takes over from there. It does not, however adjust the timing automatically, only the AFR. I plan on putting in a Feuling 574 cam soon and like the fact that I can make changes myself. I've never used the TTS, but the guys on this board swear by it also. The Tmax is more expensive too. I guess it's just a matter of personal taste. Good luck. BTW, my bike runs a lot cooler since I changed the tune and mufflers.