Have the first version. As far as room, it's great to have the very large side doors, no stepping over holes and gear to enter/exit. Stand up head room, not much stooping to get in and out. Lots of room in the tub for gear. Good window positions. Heated mine with a buddy heater. They should include the cover. Unfortunately I'm selling mine, arthritis makes it difficult to get down to pop it up and also install the anchors.