75 or 35-100 which would it be? I just sold my 50-200, and thought all along that I'd replace it with a new 75 1.8, but I've seen a few 35-100mm for sale in the 900 range, which got me thinking. How good is the weather sealing on the 35-100? I know all about the weather sealing on my olympus lenses, but never owned/heard anything about the quality of sealing on the panasonic. Eventually I'll be replacing my 12-60 with the 12-40 (once the 12-60 sells). Weight wise, they're about what 50grams apart?