Once I looked at the new Double Cab which replaced the previous Extended Cab, the decision was easy, stepped up to a Crew Cab. The added pillars make getting in or out of the DC much more cramped than the previous CC. The DC is a much quieter interior however. With the extended pin box and rounded front cap on our 5er, I have no problems with the 6 1/2 bed.
Here's another vote for a 3500 SRW v 2500. New, it priced out about $500 over the same 2500. Finally, look for the 5th wheel hitch prep option - great option!
