I just traded my "old" 2006 Tundra DC on a 2007 Double Cab. I did this about a month ago and my impressions are:
The'07 has more goodies and a more modern interior (Particularly it has a better instrumentation panel, transmission temp etc.)
The '06 was more bland styling wise
The '06 was better behaved (smoother power delivery)
The '07 can transmit more vibes when getting on the throttle in first and second gear
The '06 had better leg room in the rear.
The '07 tows better
The brakes are killer!
All in all, I feel it was a good move, but the '06 had a silky quality about it that I miss. If you don't need the extra towing capacity......
The'07 has more goodies and a more modern interior (Particularly it has a better instrumentation panel, transmission temp etc.)
The '06 was more bland styling wise
The '06 was better behaved (smoother power delivery)
The '07 can transmit more vibes when getting on the throttle in first and second gear
The '06 had better leg room in the rear.
The '07 tows better
The brakes are killer!
All in all, I feel it was a good move, but the '06 had a silky quality about it that I miss. If you don't need the extra towing capacity......