I'm looking to pickup a telephoto lens with a EF or EF-S mount, the hard price limit is $700. The local camera shop has a Canon 70-300mm 4-5.6 IS USM for $650. They have a Tamron 28-300mm 3.5-6.3 for ...
I've got a B+W UV filter on my 70-200L for protection. It doesn't affect the picture quality at all, and provides peace of mind to me.