yeah so i got a canon 20D w/ a 18-55mm lens. now since x-mas is coming up i've got a list of stuff i wanna get for it. wide-angle lens, telefoto, battery pack grip, 420EX speedlite flash, remote, etc, etc, etc. anyone have any sugestions for wide angle and telefoto lens'? i was looking at the canon EOS 100 to 400mm tele. any info would be awesome, thanks.