@Nano. I don't really know what you have to invest into your volks, everything is unlocked with your tiers. The only investment is the 60mu STG upgrade. Losing a vet5 volks or anything vet3 is about the same problem.
Yeah I am not entirely sure what I meant either now that I think about it. I think I was getting at Volk feel like they take forever to get to vet 5, riffle and penal seem to vet to 3 faster. I guess I mean you need to invest effort into vetting them, taking risks when you normally wouldn't I guess?
It's true that losing any max vet unit is bad, but Volk are so poor with out vet that it's super hard to get any back up to that level from mid game and up. Usually better to just go right for Obers if you lose the important Volk.