welsome to houston.
i had mine done in Momentum Southwest. per my neighbor (BMW fan), BMW Advantage has the best knowledge. try it and let me know.
on the other side, there are quite a lot 7'ers in houston with best (to my understanding)knowledge, i.e., quarterto8, keith. they may shed a light with you.
paper in CA, CCCP in Canada, and quite a lot of "senior" members in this forum may cut in any time to help you too.