I'm the lucky guy who has $5000 to spent, I don't really need them, but just want to hold that big white lenses. I'm not interested in wild life or bird, my kids only 2.5 years old and i shoot with my 135mm2.0 a lot and really love it, I want to know what you guys think, which one you will pick and why. or may be I just should not get any of them?I know this kind of sick, but can't help. thanks!