I'm interested in getting a lens with a little more reach than my Oly 40-150mm lens on my E-PL2. Looks like the options are : Oly 75-300mm, Panasonic 45-200mm, or Panny 100-300mm. But I'm also concerned with the overall IQ of such a lens, and am pretty happy with that of my current 40-150mm. In your opinion(s), which of these other 3 lenses would offer me quality AND increased tele range, equal to, or better than, my 40-150mm? Thanks for your thoughts.