What brands/models of ultra-light tents are some of you using for loaded touring?
REI has the Big Agnes Fly Creek UL2 on sale right now for $270 (about $100 off) and it weighs only 2 lb 2 oz (without the stuff sack), which seems incredibly light. Obviously there are trade-offs with UL tents but for loaded touring it seems those might be compromises many would be willing to take to help lighten your load and volume. From reading the reviews at REI, the Fly Creek is only marginally 2-man but has plenty of room for one person with gear, and it's also very rain, weatherproof. I looked at some of the bagged Fly Creek tents at the local REI the other day, and they are incredibly compact and light weight.
From reading the descriptions and reviews, the BA Copper Spur UL2 actually seems like a more useful design but it weighs about 1 lb more and is quite a bit more expensive ($400) since it is not on sale.
REI Outlet also has their 2-man Quarter Dome UL on sale for $205, but it weighs nearly 2 lb more than the BA Fly Creek. Like the Copper Spur, it seems a more useful design than the Fly Creek, but I'm wondering if you are better off accepting the compromises of the smaller, lighter tent to save on weight and volume.