
f4 IS is not f2.8 IS II. If someone thinks that they just dreaming. f4 IS is very nice lens, no questions but f2.8 IS II is better in every respect. Weight/price you have to pay. Now if you don't need f2.8 then why even look at f2.8 lens.
Lol, you reiterate my own argument...2.8IS II is better in every aspect, but do I NEED 2.8?
Well, I suppose I don't NEED it, but it sure would be nice to have it. Or, you could say I want the 2.8, but do I NEED to better IQ (which probably wont be all that noticeable on things other than 100% crops/very large prints)
I always hear people say that if you are doing this for money, then get the best available equipment. Which essentially implies that if you aren't doing this for money, there really isn't a need for the best equipment.