Since we are talking quality......I have tried Evans and M&H (sold exclusively through Year One).
I would not use ANY other reproduction harness other than M&H on my cars. Yes, expensive (roughly $600.00 for a dash harness and an engine harness). Well worth it, cheap insurance, fits like original, goes in easy because it belongs there. No other way to go on a reproduction IMO.
If you have a decent original you can have JS Restorations restore it for you, SUPERB customer service and quality but I don't think he's accepting new work at this time.