Leo,
I went thru the same dilema two months ago, when I was preparing to a trip to the Black Rock Desert, as I needed a sealed lens in the range.
I already owned the DA 16-45, and though i actually like the IQ a LOT (and that is coming from someone that had a chance to rent the DA* 16-50 before), but the lens has no WR.
Anyways, the dilemma was: sell DA 16-45 and buy DA* or buy the new 18-55WR.
At the end, the 18-55WR got the bid, not only for the lower price, but mostly because of its SIZE and weight.
Coming back from the trip, here are my feelings:
- I was shocked with the results i got from the new WR Kit lens. Really really incredible: colors were coming out great (though i had a Polarizer), the sharpness was there, and contrast was more than enough!
- The lens survived the desert just fine: it is all dust right now, but i have no problems.
I plan on keeping the DA 18-55WR and the new dilema for me is regarding the DA 16-45: sell it or keep it? I even considered selling both DA's and financing the DA*, cost would not the a problem, but the size and weight it is, and I do appreciate carrying less weight around.
Good luck,
BB