The TRD Pro gets lots of attention and has some pretty solid design cues. But I think the TRD packages they offer get you most of that capability for quite a bit less. I do hate how they group their packages in their builder and dealer order sheets, I just find it a bit more confusing than other OEMs.
So how would you spec it? I did a simple SR5 that I think I'd go with if I were buying the Tundra.