Dude, you don't want the DCT unless BMW fixes the lag issue.
The know about the issue and tell people it's "normal behavoir" for the DCT tranny.
When is it normal to have NO POWER when you step on the gas???
Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."