Seek Outside's Lil Bugout is a great system with a lot of versatility. I consider pyramids to be the best 4 season tents out there because they can stand the wind and snow load better than most traditional "tent" designs, but without the added weight.
What I would do, is get 2 bases and a nest. Use one base as a floorless shelter most of the year (or base + nest if floorless is not your thing), and in the winter attach it to the other base for a proven and storm worthy 4 season shelter. Can still have the nest inside the double base for 2 sleepers and a sizable vestibule/relaxing area.
http://store.seekoutside.com/lil-bug-out-shelter-base/
Here is a pic of just the base:
Base + Nest:
Inside of base + base configuration (yes two bases are meant to be zipped together and extended into a larger 4 season shelter).
Alternate pitch of just base for a little more protection:
Video of a hunter using just a base:
https://www.youtube.com/watch?v=3AkGfqGdXDo
I have no financial interest in this company, but after 2 months of research I was able to sell all of my other shelters and just use some combination of this for all of my needs. Had a tent for when my GF and the dogs wanted to go, A regular tarp shelter, and a mid style tarp shelter. This does each of those jobs better IMO. I like light weight backpacking as a hobby so most of the year I'll just use the base as a floorless shelter. The regular and 2 pole pitch should meet my needs 90% of the time. My other buddy is getting a base also. So we each have our 16 ounce bases as our own, if a serious rain storm blows in or we are camping in the winter and want to trap some heat, we just connect the two bases. Add in either their 2 person nest or a bearpaw wilderness pyranet appropriately sized for your needs and you can do anything. Also their current color offering called "grizzly brown' is a really dark stealthy brown.
I sold a Golite Shangri La 3 now that I went with the Lil Bug out system, but that should get an honorable mention. Comes with a nest so you can use just the tarp or tarp and nest for floor and bug protection. Never failed me and did its job well. I just found something that works better for me.
http://www.golite.com/Shangri-La-3-Tent-P46713.aspx
The green they offer is pretty nice from a stealth perspective, but each tie out has reflective stuff on it. Thing lights up at night if a light is shined on it (not the case with Lil bug out) so you would need to take that off if stealth was a concern. I hope that helps. I'm a research junkie with this stuff so had all this stuff on hand :)