i voted for fsworks since i went with their tuning. i had looked into tom's originally but when i started asking for dyno charts for all the things he says he's done he got defensive and wouldn't show me any. i asked fs the same thing and had dyno charts emailed to me within a day. i just like to see results and not given the run around. also ive dealt with other one man operations before liike f2 and i just can't deal with that. if one person is sick or dealiing with family problems or is on vacation the whole company shouldn't shut down. i know this might not be the popular attitude, but thats my opinion.
ive been pretty happy with the fs stuff so far and will continue to do business with them for future purchases i'd say.
oh and i haven't been charged for any updates either.