PETER
zeiss or swarovski makes the best scopes ever.

iqbal
Totally agree with Peter.Add another name Scmidt and Bender. S&B web site

3sixbits
One could say that this outfit is the King of low light scopes!

The best I've ever used ,and I have the other brands mentioned.

RIPP
I have a Leupold 1.5 x5 on my .375 and a Leupold 1 3/4 to 6 on my .416--to date each has withstood several trips to Africa and several hundred rounds of ammo with no problems what so ever.

The reason I choose what I did is that I purchased a custom rifle for a gentleman in Texas who sells all brands mentioned--he stated that he has fewer Leupolds back than any other scope--

I also have Swarovskis on some of my longer range rifles in addition to having a couple pair of their bino's--agree their glass is second to none..

All the brands mentioned are good, some better than others. I've owned all the brands mentioned with the exception of a aim point, and I find them all well made, and good quality scopes. However price is not always a good rule to go by! In this vain, the S&B is a fine scope but I don't consider it to be enough better to be worth the $1500 USD difference between it and the Leupolds.
The Zeiss scopes are nice, but not as bright as the Leupolds, at twice the price! The Swaros are better than the zeiss scopes where light is the criteria, but they are heavy, as are all Europien scopes,as well as being too large in many cases.

All, are good in different ways, but when looked at from all angels! Price, sturdiness, warenty,light gathering, bulk, the winner in most of those is the Leupold line, IMO!