One fitness machine for my house

[Bulldog]

I want to purchase one machine for my house, preferably $400 or less. I have a bench and some free weights already. I'm thinking a bike is the way to go, because right now between the two, I'd rather lose fat than build muscle. I have looked into Bowflex/Crossbow a little, and they seem like I would get some good use out of them, however. Thoughts?

[diebitter]

Whatever aerobic machine you get, make sure you like doing that for sure. Nothing worse than buying a cycle machine, and realise cycling doesn't suit you as well as, say, rowing or something else.

[daveymck]

What about a crosstrainer?