My brother inherited the 8x32s, built about 1975. My 7x35s are about 1968-1970. Last deer season a fellow I hunt with (my father's best friend's son) said he wanted to show me something, pulled out a pair of 7x35s identical to mine. Like me,, he carries them constantly, and uses them constantly while in the stand. I'm sure his father and mine admired the glasses, and when one bought them, the other did too.

I've had mine cleaned/collimated twice in 50 years. I don't know about the other 2 sets. Last time I sent mine in, I asked the fellow at Suddarth "If put down my old ones, switched them for the new Leica 7x35s a second later, would I be able to see the difference?" " He said he doubted it.

Buy once, the best you can afford. I spend probably 50 to 100x as much time looking through binos as through a scope.