I can only testify to Legendary in quality. Never purchased from elsewhere. I never expect to find best quality and service in the same place as lowest price.
Pro/Fit Interiors is a little cheaper than Legendary and may be a dealer for Legendary. I say this because Pro/Fit's part numbers are exactly the same as Legendary's. Notice the part numbers on the 2 photos for the blue covers.
I've purchased 2 full interiors from Pro Fit, all legendary stuff... just a bit cheaper. It's been very easy dealing with them, and they were able to connect me with a supplier for some harder to find stuff, such as the window felts for my '65 Belvedere. Extremely helpful.