I've owned my CVT tent for about 5 yrs. now, It's a Mt. Rainer model. I have about 12,000 driving miles on this current setup, west coast trip - 2015, east coast trip 2016. Lots of Midwest trips also. Close to 100 nights in it. We've been in some extremely winding nights with it which makes the rain fly flap like crazy, no matter how tight you try and pull it down. I haven't tried to take the rain fly off though on those occasions, usually we end up sleeping through it, sucks though. So far, no issues with the tent, rain stays out. If it's really coming down, it'll pool a little bit over the ladder part, right above where you enter the top portion of tent. The lower annex room works for me, but since my tent is mounted up high, we are able to stand up without worrying about hitting our heads on the under side of the tent. Later this spring I'm gonna make another rack system, without the use of the truck cap, so I can mount a canoe and kayak above the tent, sacrificing the head room when the annex room is used. Always a compromise.