The Optika6 scopes do carry some heft. When you take them out of the box they feel like they are built like a tank! That is a good thing as far as I am concerned. Mine has fallen more than 10 feet 2 times, neither was my fault, thankfully. Zero issues from falling onto hard ground, not even knocked off zero. I think if I was back living in Ore. I would choose the Optika5 just for the balance on a lighter spot and stalk rifle. Sitting in a blind waiting for pigs, predators to deer, depending on the season, the added weight doesn't bother me at all. Meopta has a shipping and receiving plant in FL but everything is produced in the Czech Republic.
I have the Optika6 5-30x56 with the 34mm tube and it is a beast on my Bergara Premier LRP in 6.5 CM. It makes 800-yard shots feel pretty darn easy.