Hello everyone. I am very new to the DSLR thing. I purchased a Canon XSI about 2 months ago and am getting to know the camera. I bought the camera with the canon 18-55mm IS and 55-250mm IS lenses.
The problem I am having is that I find myself constantly switching lenses and I would like a simpler setup. It seem like I am doing the majority of my shooting is at the upper range of the 18-55mm lens and at the lower to middle end of the 55-250mm range. So I am interested in the 18-200mm lenses or 28-200mm, etc. I am confused as to which lenses are going to be the best bang for the buck for me. I have seen some great deals on the USM 28-200mm lenses, but my understanding is that these are older lenses and do not have the IS feature of the current lenses. Locally, the only lenses anyone seems to have in stock is the Sigma 18-200mm. How are the off brands vs the Cannon lenses? For my level of experience the kit lenses seem fine, so I am not looking at aything extremley high end. Thanks for any and all help.
Juan

