The tent cot is fucking huge. It does take up a ton of room. But, I dig it. Pull it out of the bag, fold it out, and BAM! done. If it rains, you're out of the water, and thats the biggest reason I got it.
What does suck, though, is not having the room. You have nowhere for your clothes bag, or even a corner for your muddy shoes.
I got the double, but it's almost a waste to get a double. That damn bar that runs down the center is totally in the way. You cannot spread out and be comfortable. And, if you have a woman in the tent, it's hard to even cuddle or fuck.
If you're planning on taking the family, I would just get one of those disposable jungle gym tents from Costco that is bigger than the Astrodome. But if space is not a real concern and you want something built nice thats easy, the Tentcot is nice.