Help: Telephoto Zoom lenses- Canon, Sigma or Tamron?

[Meggy]

I need help on deciding which one of these telephoto zoom lenses to buy for a Canon 550D camera.

• Canon EF 75-300mm f/4-5.6 III USM Lens
• Sigma 70-300mm F/4-5.6 DG Macro Lens
• Tamron AF 70-300mm F/4-5.6 Di LD Macro Lens

Also need reviews on- Canon EF-S 55-250mm f/4-5.6 IS Lens