I have the 2011 EB towing the 27' TT in my signature. We bought it before we picked out the trailer so we wanted to make sure we could easily tow whatever we bought.
The loaded weight of the TT is about 7500 lbs and our tow capacity is 11,300 lbs. We've towed it 7500 miles in our first two years (Nova Scotia to Montreal, White mountains, Newfoundland and parts in between). We have our share of hills and the EB engine handled them with ease.
This is our first truck and RV so I can't compare to any truck. Overall I love this truck even if the mileage may not be all it's cracked up to be.