I'm looking for a new lens that will give me a bit more reach than my EF 70-200mm f/4 L for photographing wildlife (i.e. ducks, squirrels, etc.). I've excluded the 100-400mm L as I don't like the push pull and the 400 mm f5.6 due to it's lack of IS. I can't afford any of the faster L telephotos or those with longer reach.
EF 300mm f/4L advantages
* faster lens 4.0 vs 5.6 at 300mm
* compatible w/ Canon extenders
* slightly better sharpness at 300 mm?
EF 70-300mm f/4-5.6L advantages
* $80 cheaper $1269 vs $1349
* more versatile (range of focal lengths)
* more compact (travel friendly)
Did I miss anything. I appreciate any and all opinions/comments. Thanks!
EF 300mm f/4L advantages
* faster lens 4.0 vs 5.6 at 300mm
* compatible w/ Canon extenders
* slightly better sharpness at 300 mm?
EF 70-300mm f/4-5.6L advantages
* $80 cheaper $1269 vs $1349
* more versatile (range of focal lengths)
* more compact (travel friendly)
Did I miss anything. I appreciate any and all opinions/comments. Thanks!

