so, they aren't the cheapest, but tarptents are very easy to set up and MUCH
lighter. if you need a three person tent, look at their rain shadow 2 tent. i have their cloudburst 2 tent, which is a two person tent, and it only takes 5 minutes to set up by myself.
they are waterproof and bug-proof when you zip up the door. its also only weights 2.5 lbs, instead of the 10 lbs the one on amazon weighs. also, that amazon one doesn't look like a tent i would want to be in if its starts raining hard.http://www.tarptent.com/rainshadow2.html
if its too pricey for you, look for a used one on the backpackinglight forums