Thats the only lense I have. I have been happy with it. Someone earlier in this thread was talking a bunch of crap about it. I think its a good all around lense for someone(me) who wants to learn, but doesnt have a ton of coin to drop on a few different lenses. I do want to get something that reaches out there to get more wildlife shots. I am not near sneaky enough to get close.
I have a 200mm fd lens..so after the 1.6x due to camera and the 1.25x due to adapter..it's a 400mm haha but all manual focus and might not be super sharp..just have to play with it and see. Also have a 500mm reflector one. My dad said it's not super good tho.