1) DCT still has downshift delay issues that may be fixed soon with an update.
2) Possible heat issues on hot days.
3) Durability, fluid changes under track use? Could be very expensive.
Now if the issues get fixed, we can talk about an advantage, but for now who knows.
2008 E92 M3 Jerez Black,DCT,Fox Red ext,Prem,Tech,19", ipod/usb, CF roof and trim
2010 E91 328i Space Gray,Black int, M sport, most options
2007 Montego Blue 335i (retired)