Everybody seems to like the Kodiak Canvas tents, for a non-packable canvas tent. They look like a great alternative to a smaller wall tent.
If you are looking for a packable tent, there are a lot of options. For heat, that kind of goes in the direction of floorless.
I have a 6-man tipi from Seek Outside. It is a palace for one, more than needed really, but I like being able to walk in, versus crawl in. The tipi is only 5.8 lbs all-in. Big enough for a big cot, but still packable. If you are not going too far or steep it is nice. If you are doing spec-ops deep-recon type mileage (grin), something smaller/lighter would be better.