In March I am traveling for a photo workshop in Patagonia. My Oly 12-40/2.8 will probably be my workhorse lens. I am considering renting a zoom telephoto for other shots as the only longer lens I have is the Oly 40-150/4.0-5.6. The 2 primary candidates I have in mind is the new Pro Oly 40-150/2.8 or the Panasonic 35-100/2.8. The Oly has longer reach but the Pany is much smaller. Thoughts on the 2 lenses would be welcome as well as other suggestions. I am trying to minimize my kit as well because on occasion we will be hiking to our locations. BTW, I will be renting a second body.