both canon/nikon have entry level aswell as pro level gear availible. Nikon has been currently producing camera body's such as D3/D3X/D3S/D700/D300, that have changed the game for photographers with ISO capability and many other benchmark features. they also produced their current line of 14-200mm 2.8 zooms (14-24,24-70,70-200 VR2) that cream ANYTHING including L glass availible, believe me i look at alot of charts and tests on everything, the 14-24 nikkor is a big favorite of canon shooters, they even made an adapter for nikon glass to canon bodies.
Nikon is good, Canon is good- both make good gear, don't get jumpy about what is the best, esp if your not educated on professional photography.