Sierra Designs Hyperlight -- the one for 2 people, not the one for 3.
Free-standing and good size vestibule.
Can pitch fly/footprint w/o inner tent.
No vent in fly, but inner tent has a lot of mesh w/good clearance between it and the fly.
May be able to get weight to a little less than 5 lbs -- but it's for sure way far below the 3KG+ of TNF Talus23.
Roomy interior with good headroom. Promo photos of this tent sometimes show two people sleeping head to foot with each other. That's not the best use of space in this tent. Lots more convenience and rooom if both people have their feet toward to closed end of the tent and their heads toward the door and vestibule. This gives space between their bodies that widens out as it approaches the front of the tent.
The Hyperlight has unusual appearance and footprint, but it's exceptional in creating usable space, ventilation, and stability. Easy to pitch, too.
My wife and I spent comfortable nights in our Hyperlight during the fall a few years ago at Enchantment Lakes. Winds blew across the tent like a freight train, but it stayed snug and tight throughout.
Not my shelter choice if main goal is cutting base pack weight as much as possible, especially if hiking alone or where weather is sure to be nice. But if comfort is paramount and windy rainy weather is likely, a Hyperlight would be my choice.