Megastink- For the budget folks....I run with a 8X30 Vortex Diamondback Bino and just picked up the Athlon Cronus 12-36X50 spotter from Cameraland on sale. For the optic size and weight the spotter is pretty clear. I've never looked through the 501 Kowa's. Now I'm just looking at animals and trying to determine a little more then if a buck is a "nice" animal and get a good sense of points....I'm not trying to judge total antler score. I've compared it with my Nikon Fieldscope II ED 60mm and the Nikon is better everything but that little spotter does not do too bad.....at less than half the weight and a third of the price of the Nikon new. Maybe I'll try the 12X50 somethings bino. set up but it seems like it would be alot of weight around your neck all day. Anyway always fun to work out your system.