I am 6ft6.5 (almost 6ft7) and finally settled on a T4R due to the fact that it fits me so well. I sat in a premium and it's a no go for sure with the sunroof. But a non premium fits great!
Leg room is fantastic as the driver seat goes down and back plenty. Actually I like it maybe an inch from the max (going back) I have the seat all the way down. Headroom is good. Around 2-3 inches. But best of all, I don't have to totally crouch down to see the stoplights! Just lower my head a little and bam! I can see em. I had a 2014 Tacoma and it just didn't fit me right. Headroom was ok by my eyesight was at the very top of the windshield, I had to remove the sun-visor and even then it was a pain. The only one that was as nice as the 4R space wise was my 2014 FJ. But ultimately I wanted windows that go down for the dogs so ended up selling that one quickly.
I've done 2 hour trips with ZERO comfort issues. I can totally see myself in this 4R for the next 10 years
I had initially written off the 4R as I didn't think I'd fit in it, I was wrong!
I also looked at 2005+Sequoia's and those had plenty of space, but if you don't need all the extra room (3rd row), the 4R it a perfect balance. Also may wanna look at the Lexus GX's, one that's a few years old. Those work well for tall people.