My choice was the 2.7T, to tell you the truth a truck wasn't on my radar when it came time to replace my Genesis G80 sport. I had my fun with that twin turbo V6. I had recently got back into snowmobiling so I did wanted a vehicle with some towing capability(I was using dads Verano w/studded snows). My son had a new Trailboss w/5.3....no thanks...too tall...too stiff, too thirsty for every day driving.
I checked into the new 2.7 and was impressed with the engineering. In 42 years of vehicle ownership I have only had 1 V8. I just really don't have the need or desire for one. The 2.7 is power dense and pleasing to drive. Rated at over 9,000# towing, I would not hesitate to tow a camper or any other trailer at 5,000# any where at any time for as long as needed. I am usually a more sporting driver than most, but I have a powerful 175hp sport touring bike and a 200hp turbo snowmobile to get my speed jollies. The 2.7 can keep me ahead of normal traffic and still return over 18mpg(can hyper mile over 22mpg) so a V8 would be over kill for me, besides, I personally prefer the sound of turbo spooling up verses the V8 sound....that's just my "thing". As for the folks that are convinced that a N/A V8 will out live a modern Turbo 4, I really don't care because I seldom keep a vehicle longer than 60,000 miles, just can't watch a vehicles value fall next to nothing, so I trade my stuff every 4 to 5 years. Given the good engineering in the 2.7 I wouldn't be surprised to see one last as long as a V8 if cared for properly.