Great discussion guys, one I've seen and been part of for years.
I batch sparged with the SS mesh tube for years, worked great. I fly sparged for a while, and while a different process between the stirring and draining in batch and simply rinsing in fly.....both worked great and the efficiency difference was so small as to not even worry about arguing about it.
My current brew house has a CPVC manifold, I have the ability to batch and fly due to how I designed it. I did that on purpose to have the ability to demonstrate the two types in brewing classes.