Mine was awesome. We ran a small heater buddy in there (with a line running to a 20-pound tank on the outside) on low all night and I was toasty warm. I left the vents open on the inside of the tent for cross ventilation and peace of mind. But if you closed those vents, it would likely get too hot with the heater buddy on low even on a 30-degree night.
Plenty of space for 2 cots, gear and a folding table. For 2 people I would not want a smaller one and honestly, I don't think we really needed a bigger one. This one literally was just about perfect. I set it up by myself the other day in the yard to check things out since I didn't clean it out when I got home from our last hunt. It took me exactly 10 minutes to set it up by myself.
Personally, I liked the enclosed trailer for Colorado, but the fuel mileage crushes me pulling that thing. I go from 20-22MPG to 12-14MPG and that's a big difference in fuel costs when you're filling up with diesel. This bridged that gap and in a couple trips it will have paid for itself.
It was a great purchase.
I will be using this on a couple of the GA deer hunts this year. It should work great for that.