I've just bought a Fox Classic Easy Dome.
First time out it was up in less than 5 minutes and away in about 3.
I think I should be able to halve these times with practice.
Single skin porch, twin-skinned main body, triple skin roof, vented all round to reduce condensation (none apparent when I used it) built-in groundsheet, the main body is clipped in, so it can be easily removed for cleaning.
Now, I'm not generally a great lover of F** gear, but I'll have to say that this isn't a bad bit of kit. Easy to put up and take down, reasonable quality and a decent price.
Time will tell......