Save the cash on the bowflex. Buy an olympic bar, weight, power rack, and a bench to put inside. Alternatively get a gym membership. If you want results, there is no comparison.
But look at the bowflex commerical that old hoe is hot. LOL There is nothing like walking in to the gym hearing grunts, and the smell of sweat. Plus a bowflex wears out quick and there on only a couple exercise that big guys can do on a bowflex. Last you can as good of a workout without free weights
I agree Gym is the way to go, but I won't knock a Bowflex. When I had a broke foot before I got a walking boot and could not get around the Bowflex was a great thing for me. But as soon as I got my walking boot I limped my ass to the gym.