I just thought I'd try this out. I have some Steiner military Marine type 8x30's and they are just too small for my use. They are in excellent, seldom used condition. I think I would like to try a pair of the Oberwerk 15x70's. I believe from reading here on Astromart that I would prefer the newer models that don't change focus just by touching them. Again these Steiners are in excellent condition and I would prefer Oberwerk's in like condition. It appears that the resale value of both of these models are the same so I think this might be a fair trade for both of us. Thanks for reading this ad and feel free to contact me with any questions.