Just a quick plug for the 70 – 300 L. I use that lens extensively on my 7D, and the image quality is fantastic. It doesn't matter if it's 70 mm or 300 mm or anywhere in between, it's fantastic. However, everyone is correct to point out that it is a "slow "lens. It is not so useful indoors with any moving subjects, but the image stabilization is excellent and works well with stationary subjects indoors.