I've always been a fan of the Big Agnes tents (and all their gear like bags, pads, etc.)... I have 4 BA tents now, all different sizes, and my car camping ones are pushing 10 years with a lot of use. I wouldn't say the ultralight tents are 'durable', but they are good tents. They have lots of venting for air flow to minimize condensation. The very nature of them being 'ultralight' takes away some of the durability, but if you take care of the tents they will last.
I have the Big Agnes Fly Creek UL1, which is truly a '1 man', but is a no brainer at 1 lbs 10 ounces.
I have the Big Agnes Copper Spur UL3, which can fit 2 guys, but is a castle for 1 man and gear, and comes in at 3 lbs. 11 ounces.
Both tents above use a single pole system and are freestanding.