Ok, thanks.
Maybe I should state what I am thinking. I am at the stage where the original lenses I purchased with my kit, I would like to improve on. I am seeing the benefit of having faster lenses.
I originally had the 18-55, 28-135 IS and 70-300 IS
Last year I purchased the 100-400 IS L, for the longer reach, and I have purchased the 17-55 IS 2.8 for better quality over the 18-55 kit (from a 400d).
So I have been thinking for a while, that the weak area now is 55-100mm.
Today, walking around PC World (where else would you find dishwashers and camera lenses), my wife spotted the 70-200 ISL 2.8 and asked about it.
I sometimes take the 70-300 IS out to events where the 100-400 L IS is just going to be too bulky. I guess what I am asking is would the 70-200 be a complete replacement for the 70-300, and give better quality than the 100-400 (making me want to use this lens less)
Just seen Richards message.
I think it was the 2.8 variant of the Canon 70-200 (assumed the L made it obvious it was Canon, but forgot there were two aperture values).
I do have a cheapish ?kenko? extender, which I rarely use. The occasions that I do use it, are for extra reach on the 100-400, not on my other lenses