What style hanger/shackles do you guys recommend?
New stock replacements are like $14 from NAPA. The bushings are so small you won't get much deflection regardless of what they are made out of.
That's what I would go with.
(Or clean and paint the originals and install new bushings.)
The only reason $150 shackles are made is because the world has people willing to spend money for zero return.