This one has great resolution compared to a lot of other ones I'm seeing in this thread. Is there a specific PP technique you are using? It might be pp/exporting for the win here. A lot of the BIF's look good but on my monitor they seem to lack a bit of detail. Yours is great.
I also noticed no exif, can you let us know the settings here? I need to replace a tele in the next few days.
Sorry for the late reply syntrix but here is the exif data for the above pic
Exposure Time = 1/320
F Number = F6.3
Focal Length = 229mm
ISO Speed Ratings = 400
The only PP i did on this photo was a slight crop and auto contrast in picasa then just exported the image. This i must say is one of my best photos produced from this lens even with a 40d would love to try it mounted on a 7D something with abit more resolution.