Nikon has better consumer bodies. Canon makes the best 'pro' lenses (other than specialty companies like Leica and Hasselblad) in the world. Based on your current camera choices, you don't seem to need 'pro gear' (which is really a myth, as anything used by a professional can be considered 'pro').
Also, you may want to consider Pentax if you're in to primes. Their FA limited series (31, 43, and 77mm) is usually considered the sharpest, smoothest (in terms of bokeh), most saturated primes on the market. Their new DA* f/2.8 SDM zooms, which will be out later this year, are very impressive. Besides their great glass, the K10D, a prosumer body, has weather and dust sealing, which can only be found in Canon and Nikon's $3000+ 'pro' models.