No experience with them exactly. I have the MIA Overlander Rooftop tent and the MIA and the OVS soft shell and hard shell tent look 99% identical, main difference is color, shoe bag difference and latches. The design, hardware, layout, star gazing window, even the metal poles for the windows are the same. So, with that being said, I think my opinion is somewhat warranted for this thread.
In all, not a bad RTT. I have the soft shell and a friend of mine had the hard shell that he sold for a topper. I have had mine for 2 years and don't really have any complaints. I do a lot of desert driving, washboard roads and desert washes so every year or so I re tighten all of the nuts/bolts I can find. Usually have to give them a turn to really snug them down. I camped 2 weekends ago and it was windy and raining and it leaked through a tear which was from me. At first it took me about 10 mins to open up and 15 to close, now it's 5 mins to open and 8-10 to close so it takes some time to get the routine of it. The ladder works great, all zippers work well and it's fairly well built. I assume it's a china manufactured tent that is re branded and sold. The price point is just about the same. I have camped in it probably 20 nights since I've had it and sleep like a baby. I guess the mattress could be a little better so I used an old mattress topper from the old guest bed and put it in there. Mine weighs 120 lbs so being a big dude I can man handle it and put it on my rack by myself with a few umpfs.
In my opinion, I don't see a reason to spend $$$$ more on a brand name when something this price point works perfectly. Especially because they're all pretty much the same and in reality how often does it actually get used? My longest trip was a 4 night hunt in AZ.
If you look at pics on google of both of them you'll see how similar they are and why I felt like commenting. If you pay attention to the little things you'll see what I mean.
Anyways, hope this helps!