Need Help Chossing next camera

[Elazu]

Hi, Im currently learning how to take pictures, I am a Canon Eos Rebel G11 35mm Owner (My First SLR) and a Nikon D3000 Digital with a Kit lens Nikkor 18-55mm using this camera I became a Nikon Lover, Now I'm taking this photography thing a little bit serious and need help for chosing the right camera. I was thinking in getting a Nikon D90 body combine with a fast lens Sigma APO 70-200mm F2.8 EX DG OS HSM ,or Should I buy only the lens and keep my D3000 Body. Anyways Any help from you guys is apreciated

[Almond.Butterscotch]

Why do you want a new camera? What's limiting you with the D3000+kit lens combo? Personally, I recommend a fast prime first (like the 35mm f/1.8).

[Elazu]

Well Im Taking pictures of a lot Moving object like Sports, Fast Cars and Airshows and need fps, and you are defently right I need a Prime lens ,

[Almond.Butterscotch]

sounds like you need a fast focussing system in addition to framerate. Also, a cropped sensor will help with the sports and airshows. A D300s fits the bill snugly, but it's not cheap.