The Black Diamond Firstlight is truelly freestanding. As is the old ITent that the Firstlight is patterned on.
It's the simplest possible design, a single wall tent with two poles that cross, no fly, no vestibule. It goes up in about 30 seconds, nothing but the tent and the two poles is needed.
If I'm worried that the wind is going to carry off the tent I put a rock in each corner on the inside of the tent.
This will be year six that I'm using the tent, and I stopped bringing stakes a long time ago.
Weight is very reasonable at 44 ounces with stock poles, 37 with carbon fiber ones.
The Firstlight has other issues though:
It's short lengthwise, I'm 5'4'' – much taller may be an issue. It's made in Epic which is highly water resistant but not water proof. Depending where you hike this could be a serious consideration. I hike the Sierras and the desert -it's worked for me. And it's fairly spendy at $300, unless you find it on sale.