Come see me next time were racing stu.. we will sort your cam out and you will eat those words!
I guarentee you we can set your camera up to get photos that
really pop out..
Honestly, a Pro body wont make better images.
I like my camera to produce images that I can use without any / much messing about. Especially the colours. and I reckon your 350 is MORE capable of producing nice colours than the 1D is, but we shall see mate.
I spent a lot of time on my Nikon, and even longer on the Canon to get images I like out of it.