As a "walk-around" lens to be left on one body exclusively ( I generally use primes when shooting with the film Nikons unless I am shooting "events" where the 17-35/28-70/or the 80-200mm can often be useful), I have toyed with the idea of purchasing Nikon's 28-300. "Googling" the lens for reviews has only added to my ambivalence: reviews are all over the map (and just for the record, I immediately discount anything written by KR). Is the sample variation this extreme with this lens? Does anyone here have experience with this chunk of glass?