I'm 6'5" and use the Bibler Ahwanee because the I-Tent wasn't long enough for me. It's a genuine, two-man tent (meaning nice as a 1 person rig, warm and full as a two) that I can easily sit up in and with very nearly vertical walls at the base. It is, however, single-wall and heavy by modern standards for UL 3-season tents — about 6lb packed to go with a Tyvek ground sheet.
The Black Diamond versions are vestibule-capable and have a full side door on each side, so you can make it into pretty much a full dome.
The Gore-Tex (Todd Tex) material works great in the winter (dry) and the massive available ventilation works the rest of the time.
Got nothing for you on traditional tents…haven't used one for 4 season in forever.