I bought this to take when I will be having someone join me. I have the Tetragon 5 and it is fine for 1, but needed more room for 2. Rule of thumb...if it says 2 man, then figure 1. If it says 3 man, then figure 2, etc... The Tetragon 8 is a 4 man tent, so therefore it works great at 3.
This tent is very easy to set up. Takes less than 5 minutes with 2 people. I took for a 4 day weekend in the mountains. It rained 3 days. I had no water in the tent. I am very happy and would not at all hesitate to recommend this.