The Mombasa is made in the same factory that makes the ARB Simpson 2, which is a great RTT. I have the ARB Simpson 2. My Buddy has the Mombasa, with the exception of the material, they are 95% the same. There are both great RTT. You can not go wrong with either, they both will keep you dry in a heavy down pour. I think you would get a great bang for your buck. If I had to do over I would buy the Mombasa only because its cheaper then the 1200 dollars that ARB wants for the RTT. Only difference is that ARB gives you the vestibule, the Mombasa does not.