I just bought a pair of Tract 10X42 SCHOTT HT. They really seem to stand in there with higher priced 'nocs - it feels more like you just spent $2,500 for the quality you get. Mine are clear all the way to the edge and nice and bright.
Schott glass is truly excellent glass. There’s a reason Swarovski and Leica use it, even though they’re buying it from a division of Zeiss. Several cost-no-object companies like Canada’s Tangent Theta use it as well. For the $500-ish price point I’d agree with others on the Nikon Monarch 5, and I’d add the Zeiss Terra ED — which uses Schott glass — to that shortlist.
After having expensive gear stolen from my truck, I’ve chosen to go with less expensive gear that performs 90% as good as the best stuff. I’d put the Nikon Monarch 5 and Zeiss Terra ED into that category.
The best image quality, clarity and detail I’ve seen were through Swaro NL Pures, but they’re $4 grand and I can’t justify the expense (YMMV). The consolation is that for a fraction of that cost I can get 90% of the performance.
For stalking or long treks on foot I use the Zeiss Conquest 10x25 Compact. Amazing, breathtaking clarity despite the small exit pupil. Light and compact when ounces count. I used to wrongly believe you couldn’t get decent brightness and resolution with a 25mm objective but these (also the Leica Ultravid BR 10x25) prove that you can.
In some situations I’ll use the Sig rangefinding Kilo3000 BDX, 10x42. Cons: a little heavy and there are minor aberrations at the edges; pro’s: built-in rangefinder. Sig just came out with a cheaper version called the Canyon, which I don’t know much about other than it’s at an entry level price point.
Here are mine, from left to right: Zeiss Terra ED, 10x42; Nikon Monarch 5, 10x42, Zeiss Conquest Compact 10x25; Sig Kilo 3000 BDX, 10x42
