ARRL article explains that Ladder Line is the way to go!
Here's a link to an article on the ARRL website explaining a bit about feed lines. There's no doubt that open wire line is the way to go.
There are many opinions on open wire line and one myth that needs to be explained is that the brown, 450Ω transmission line should NOT be referred to as ladder line. It is WINDOW line. It doesn't even behave like true ladder line.
I'll do a more in-depth explanation at a later time.