Best Lens For Canon Slr Camera

Thomas asks…How is this camera: Canon Digital Rebel XTi 10.1MP Digital SLR Camera with EF-S 18-55mm Lens?Could yous please give me your opinion on this camera and what the average price this camera is. Also, is the next step up from this camera the 20d? If no, what is? If yes, would it be worth my money to pay a couple hundred more (if that's an accurate price increase) for the 20d? I will be using the camera for professional quality photos and hopefully to supplement my income in the

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