Definitely worth it. You will not regret spending the extra money for it. I have 2 sets of coated TTI headers. One set bought in 2003, the other set bought in 2006. Both still look good. Not new, but good.

CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax