Since you mentioned comfort and are willing to carry 3 lbs, I am surprised that only Dwayne Thompson mentioned the Stephenson Warmlite 2RS. He said he had limited experience with it, so I will add a couple of things. I have three Stephensons in the family, [two 2RS and one 3RS], and hike with a friend who has all three sizes. One of mine dates back to 1978, and I have used them in almost all kinds of weather.
1. Not free standing. [I don't consider this a negative, but you mentioned it.] This has never been a problem for me. On solid rock, hiking poles weighted down by rocks work great. And it is one of the easiest tents to set up.
2. Three pounds: not for the true ultalighter.
Positives: Everything else.
Compared to the true ultralight tents I have considered, this is a palace. It is a large, two-person tent, so it is huge for one person. I don't really need all that space, but anything much lighter is so much less comfortable and versatile that I am happy to carry the extra pound.
It may be the best ventilated four-season tent you can get. Get the side windows. I tie up the side flaps for clear, buggy weather, or extend the flaps like awnings when it rains. I rarely button up the tent completely unless it is very cold or snowing.
Every company makes a two-hoop tent, but no one has copied the Stephenson design features, like the side windows, adjustable tension straps, lining, pre-curved poles, etc. Jack Stephenson claims to have invented the two-hoop tent back in the 1950's.
Unless you get the end cones lined [not recommended], you will get some condensation on them in certain types of rain storms, but minimal wiping takes care of it. Some people have complained about it, but it has never bothered me.
Of course, what works for you depends on what you are willing to put up with and where you hike. My interest is in the lightest I can go with complete comfort, not ultralight distance hiking. My base pack ranges from 11 lbs. for fair weather with nights above 50F [bivy sack instead of tent], to 20 lbs with tent, warm bag, warm cloths, and bear canister. I normally hike in the California Sierra, which can mean bugs, snow, and heavy rain/hail storms most of the year. The only conditions I have not used the tents in are prolonged, warm, wet weather.
So if you are not a hard core ultralighter and are willing to pay the price in dollars and weight, I don't see any competition. Others may differ. :-)