When I upgrade my EU mainline to EV, then I'll be using HVs, but for now a little extra gold/copper cabling is cheaper. As with many things in Minecraft, there's more than one right way to do things.Seems like a lot of effort when a HV transformer accepts any EU size packet, translating it down to 512. That along with judicious use of transformers elsewhere will cause machine loss to be zero (other than the ones you hit with a pickaxe)