I'm in the market for new DSLR lens for my Sony A33 camera and looking in the range minimum of 18 to 28 mm and max range of 200 to 300 mm. Below are couple of items to compare but not sure which one is better or worth it? 1. Tamron AF 18-200mm f/3.5-6.3 XR Di II LD Aspherical (IF) Macro Zoom Lens for Konica Minolta and Sony Digital SLR Cameras - $299 2. Sigma 18-200mm f/3.5-6.3 DC Lens for Minolta and Sony Digital SLR Cameras - $269 3. Sony DT 18-200mm f/3.5-6.3 Aspherical ED High Magnification Zoom Lens for Sony Alpha Digital SLR Camera - $479 or 4. Tamron AF 18-270mm f/3.5-6.3 Di II PZD LD Aspherical IF Macro Zoom Lens with Built in Motor for Sony DSLR Cameras - $649 5. Sigma 18-250mm f/3.5-6.3 DC OS HSM IF Lens for Sony Digital SLR Cameras - $479 6. Sony SAL18250 Alpha DT 18-250mm f/3.5-6.3 High Magnification Zoom Lens w/Lens Hood - $648 or 7. Tamron AF 28-300mm f/3.5-6.3 XR Di LD Aspherical (IF) Macro Ultra Zoom Lens for Canon Digital SLR Cameras - $419 I don't mind spending on the expensive Sony brand but is it worth it? I'm leaning toward the Tamron AF 28-300 so I can get that max 300 mm zoom or maybe the Tamron AF 18-270 mm. But being the Sony fanboy that I am I'm leaning toward the Sony SAL18250 18-250 mm. This is so hard Any help or suggestions will be greatly appreciated. Thanks.