ok guys i am looking at buying a new set of binoculars. i am looking between the carson xm-hd, nikon minarch atb, and the Olympus Magellan EXWP. all are 8X42 and all of them cost around $280. i dont want to spend over $300 for any kind. anybody have a prefrence? also is their another kind that is just as good or better for the price? last question is what is the bak-4 prism? i know roof and poro but not bak-4.
thanks for your help