I attempted to go to work for Premier Comm. in OKC wanting to switch from to cable seeing how there is no work here. well the guy "supposingly" training me told me the same thing about solid copper, I asked him what the reasoning was behind it and he said " i dont know , just use it." This is the same guy that was their lead trainer and kept me out til 11:00 pm on 4 installs my first in-field day, the next day i told him to set in the truck and we were home by 1