I built one of these World DBX bikes a couple of years ago I was impressed with how well it went together, and how easily the drivetrain tuned up, compared to some similar bikes. Schwinn has sold some real stinkers in the past few years, and some really nice, "bang for the buck" bikes. This one, IMO, is one of the latter. I would consider upgrading the wheels at some point, but I think that about the stock wheelsets on most bikes

If it fits, you like it, and the price is good, go for it!