While I've heard many many stories about Mac LT's, and how their THT coating don't stand up too good over time, I guess their cermic coated LT are pretty good i guess. All my experience with Mac has been pleasing one(except TB. they were little sub-standard)
I myself went with coated BBK, and their H pipe. Mainly because I got it for one heck of a deal(brand new Out of box with all the hardware for $350). But when I was at Carlisle, i seriosulynconsidered about picking up coated Mac. They didn't have it there. Buut I would have picked it up otherwise.
Witht that being said, I'm very very happy with BBK. Fit was great, and perform good, and with ceramic coating, look good too. While I guess Mac LT doesn't require you to take dip stick out, its really like 15sec extra(thats if your dropping K member) task