Two thumbs up on the Leo 1 3/4-6 Thats what I use on my 375 H&H and couldn't be happier.. The twilight light gathering is incredible, btw I removed the 1 1/2-5 due to the much better light gathering of the 1 3/4-6.. Don't discount the Leo 2-7 either, very compact and light (followed very closely by the 1 3/4-6) it gathers light it seems as well as any of the VXlll do..! my wife's little Mannlicher Schonauer 7X57 carbine carries the 2-7, we were useing that at very late dusk to spot waterbuck bulls as it was too dark to see their horns with our naked eye's..