Particularly at our level, it's a massive waste of money to have "two number ones" in my view.
Competition for places being that important is a bit of a myth as well imo. Most of the best teams know who their best players are and who's likely to get in the team if everyone's fit
Players don't get better just because there's a copy of them sat on the bench
Squad depth itself is of course important, but having two outstanding players in each position is simply unworkable