I've got a Schmidt and Bender 2.5 - 10 x 56 and a 3.5 - 10 x 50 Kahles on my centerfire rifles. My impressions are that the Kahles (poor mans Swarovski) is clearer optically, but the reason I bought the S&B is at low light. It is the best low light scope I've ever seen, of course some of that is the 56mm obj and the 30mm tube. We've (friends and brother) compared some scopes one night at dark (Leupold, Zeiss, S&B). I was very surprised that the Zeiss (44mm) was the first out, next closely followed by the Leupold (50mm), then the S&B had another good 10 minutes, maybe even close to 15 after the others. I've done the same with my S&B and Kahles at night. The Kahles is pretty doggone good, but the S&B gives another 5 minutes, maybe a little more. I'll have to say though, for the price, if I had to buy another large objective scope, I'd buy a Kahles 3-12x56 (30mm tube). I think it is the best scope for the $, bar none. I really believe from what I've seen the Kahles scopes are every bit as good as the Swarovski, maybe even better.....I know, I know, but that is my impression from comparing when I bought the scope and I did say for the $, but maybe not even considering that....... but that is of course my pesonal opinion.
Now for Binoculars (I own Kahles 10x42), get the Swarovski EL's. They are the best bar none. My Kahles aren't bad for the $ though.
Just bought a 3-9x50 Buckmasters Nikon for the ML10-II. Impressions on it are that it is solid for a very reasonable price (street $250-$299). My muzzleloader season is 1 week here in NC so I didn't want to spend an arm and a leg. Plus I had Cabela's points so it was nearly free for me. Low light test at my house was good. I'll have to have some real world experience. I don't think it will compare to my Kahles, but I'll be honest if it does.....I'd be surprised though.