I have owned Toyota 4 runners and Nissan Pathfinders, Toyota trucks and Nissan Trucks and the same hold true today as is has in years past.....
The Nissans seems to look and feel more agressive but the Toyota seems much more refined, smoother and quieter.
I really liked my Titan and would reccomend one but I like the Tundra a bit more. There are some features I liked about my Titan more that the Tundra, like:
1- I like the back-up warning on the Titan. I know I can get it or could have ordered it but I didnt realize how much I used it until now.
2- I like the moving pedals on the Titan. It was real nice as my g-friend is only about 5'2" and I am 6'.
3- I liked that you could build a Sub-Box under the seat in the Titan and cant in the Tundra. Yes, I will build it behind the seat but then will be giving up some of the leg-room. It will put it back to about the size of the Titan back seat.
The Mirrors.............I am kind-of dissapointed that I got them. They are nice but yes, they do stick out a long ways. They are very noisy on the highway also. I would opt to not have them if I did it again.