I have been running a Borla EL that I purchased NOS so it didn't come with the borla warranty and now that the flex joints rattle and I'm SOL. That said, I recently purchased a JDL UEL on their black Friday sale (which is still going on) and I think it's a great deal with all things considered (i.e. made in the USA, lifetime warranty, etc.). On sale the JDL still isn't the cheapest out there but considering my experience with the last header, I'd rather pay more for a header with a lifetime warranty than get a cheaper one from somewhere else and have to purchase again. I'm not saying the other recommendations are of a lesser quality or that they will break in some way... I just feel better spending the extra money to get a header with a lifetime warranty. Also, my tuner recommends the JDL above all else and that goes pretty far with me.
https://jdlautodesign.net/shop/ft86-...length-header/