Hi Guys,
I have been using an EOS 350D since 2005. I have
  • Tamron SP AF28-75/2.8 XR Di LD Aspherical (IF)
  • Canon EF 50mm f/1.8 II


I want to upgrade the body to get tack sharp images. what do you guys recommend.
  • buy a canon 7D
  • Abandon Canon for Nikon or Sony (I have heard sony sensors are one of the best in the market)

Ref. Sensor Ranking DxOMark - Sensor rankings
I am only looking to get the best images and I don't mind spending time clicking in RAW and spending time processing images
PLEASE HELP I AM DESPERATE