Before I say anything, I am a Toyota guy at heart.
We bought the original tundra when it came out, then dad bought a double cab in 2003 and he just bought a 2012 Texas edition. We still have the 2003 and it runs fine for its age.
I love the power of the 5.7 engine, it's just so effortless. Haven't read much on new 2014, but love it as a refresh, the exterior looks really nice.
You could also test drive the Big 3 as they offer good trucks. You can't go wrong with any of these trucks, be it Toyota or a ford. It's just what fits you best.
You can prob get a deal on a 2012 or 2013 because the dealers will be trying to get them off their lots to make room for the 2014.