Have one, use it, love it. Yes, it's basically a hand truck. But it's one that attaches quickly and easily to your bicycle and that has nice baggage options to make it more versatile. It also folds down quite small, which is very important for those of us who don't live in mansions. It's less stable than a traditional flat-bed type cargo trailer but the benefits of convenience and versatility far out weight that one small issue. Aside from going up/down curbs and hills, you'll hardly notice it's there; unlike heavily laden panniers on a rear rack. I've also had a B.O.B., those are great too, but in my opinion, are better suited for bike camping/touring than for daily or occasional use for errands. The best thing about the Travoy is that you can easily take it with you when you get off the bike, it's designed for it. The B.O.B. and most other trailers are incredibly inconvenient to move around off the bike when loaded.