I've been using the 14-42R and the 40-150 plus the Pany 14mm +GWC1 and Sigma 30mm - modest but good kit. I want to keep my m43 stuff very small. This week I sold my old Nikon 80-200 f2.8 D two ring, and replaced it with a Tamron 70-300 VC, and today ordered the Olympus m75-300 II (well its in the cart at B&H which opens in about 2.5 hours. I realize I hadn't used the 80-200 for a long while (just about twice last year) due to a shoulder injury, and had a few hundred saved, and the sale of the 80-200 allowed me to get both lenses that will have IBIS or VC available. I can actually see using the Panasonic, Sigma and the 75-300 as a travel kit, but will keep the 40-150mm due to its size. When the EMII arrives I hope it has 4K. Never thought I'd truly be a two system imager but I go from 12mm to 510mm in my Nikon gear and now 11mm to 300mm (not counting crops on either system) on the Oly. Except for one more m43 body I'm really set for a long time.