I will say this about spotters. And binos.
I used to have a Meopta S2 spotter and 15x56s.
I bought a set of Swaro 15x56s. During midday, there is not a ton of difference. A little, but the Meopta was probably 95% of the Swaro SLC.
During the last 30 minutes of the first day, the Swaros made the decision of buying them all worth while. Looking towards the west just after sunset, the Meoptas would show a nearly black mountainside. Even with snow and Ponderosa Pines. The Swaros allowed the contrast to stand out, and I was picking up bulls coming out of the timber.
The same can be said for spotters. I went from Meopta to Swaro, and again, would never go back.
I realize not everyone can or will spend for the big ticket items. But, buy the best glass you can. Even if it means saving an extra year to do so.