I have the Razor models. One is the big 85 and last year I picked up the small 50mm. I use the 50 for my pack around model and like others have said, it works good to 1,000 yards or so, but does lose light a little earlier than the 85. I used to pack the 85 around for miles, but it gets heavy. You can’t beat it for super long distance and low light though! You’ll be happy with either one