Olympus or Nikon DSLR?

I was very disappointed last Sunday about my food photograph which was supposed to be my entry for Yummy Sunday. However how hard I tried for a perfect shot, I always end up either blurry or very dull. Photos with poor resolution. I asked some pro-photoblogger who are more experienced in choosing the best DSLR camera. Few have chosen Olympus and they reasoned out that accessories and services are just too hard to find while Nikon is very accessible. Others find Canon more handy. I am not yet convinced about choosing the latter. Anyways, this is just one of my wishlist, hoping that Santa would drop by in my blog.