I am ground tent or back of truck person. The RTT are not my thing, I use my roof to haul kayaks, surfboards and fuels. I have a number of sleeping bags from 35 degrees to -30 degrees. The 35 degree and the 20 degree zip together and we used the right one for the weather on top.
If it takes me 15 mins to set up a tent that's OK with me. The three season go to tent is a Eureka Timberline outfitters 4 person. The winter 4 season is a VE25. I also sleep on a ground cloth often. The Gazelle/oztents are also to bulky for me. I don't like the house style tent, they are hard to warm, and don't stand the wind well. I know many that want a tent they can stand in. it's not important for me, I camp in the desert and those big tents fill up with blow sand too.
I also have Therm-a-rest pads from backpacking to thick basecamp pads. If its going to be cold I will use a closed cell foam on top of the therm-a-rest.
There are some very nice cots on the market but I have not used any.
I am not drawn by what's in fashion, I have sleeping outside for 50 plus years in all weather. I know what works for me. Remember everybody is different, the reason I like something is the reason you hate it.