Oh, what the hell... might as well put my $0.02 in.
Drive both, get the one you like better. For me it was the DCT, made the switch from MT the first chance I had.
2015 YMB/SS F80 M3 6sp - Mein Blau
2011 Sapphire Black/Black E70 X5 M - Gone.
2010 Jerez Black/Black E90 M3 DCT -Gone-
2009 Montego Blue/Grey E90 335i -Gone-