I have a 1.4 hannibal rtt, takes two to lift on and off, and that is only due to the bulk of it and not wanting to risk scratching the paint or roof rack, weight wise I could lift it by myself. It has kept us dry through a stormy windy night in the lake district, and is perfectly comfortable when weather is not an issue, the 80 does not notice the weight of it up top, wind resistance is another story, personally I like hannibal but then I am south african, supriseingly swambo likes it better than the bed at home, says it's more comfortable to sleep in, my only gripe is the fact that air can get in where it folds, but then I have yet to meet a rtt that does not lol,
It's better than my first rtt which was some german thing I forget the name of.
And John is right, something like that you would want to go collect it yourself that way if there are any issues you are in a position to put your foot down and negotiate, they want to take your money lol.
Nene Overland are the official UK importer but Devon 4x4 also sell hannibal and other tents, have a look around especially at the shows.