In terms of comfort, 10th simply lacked comfort. 11th is so good sometimes i forget its a civic . Make someone sit blind folded and he cant tell which car it is.
In terms of drive, 11th is premium and very smooth, very less turbo lag, heavier though. After all, it's the refined 10th gen accord engine... both VTEC and VTC unlike older one (VTC only)
Mileage is same, 10th was feature--less and this time we got somewhat fully loaded model. Steering is very softer and has better feedback vs X
All in all, day night difference but due to prices ab kucb acha nhn reh gya.. btw nothing else is value to money here