Re: who has a Konus spotter?
I have used both the 80MM and 100MM vesions of the spotter. Clarity appeared the same on both models. The 100MM will be better in low light. The added cost of the 100MM version isn't worth it for most shooting applications. The 100MM is also large, heavy, and generally less handy. Furthermore, I'm not sure the 100MM version rotates 360 degrees (inverts) which is handy when shooting prone (maybe someone else can answer this). The 80MM is better at the range IMO. If you do 1000 yard shooting there may be some advantage with the 100MM, but I doubt it with normal daylight