Thanks for starting this thread.
It reminded me that the BEST tippet I've found in years is about to be discontinued by Orvis, the Mirage Maxknot in the small spools (they actually sell a different line on larger spools with the same brand name - beware).
It is currently on sale for half-price on Orvis dot com. Again it is the small Mirage / Maxknot spool *only*. I just bought 6 spools.
I use the 0x for stripers and bonefish with no issues whatsover, and the 1x for more delicate situations (rarely). It's rated 15# but clearly it's not what we'd consider 15# (e.g. Maxima). It is however very strong and you can pull keepers to the beach in surf with it.
When used with my fixed double loop knot (search archives) it is the best system I have found for big stripers in mid-day conditions on the flats. Educated bonefish did not mind it at all, and I use it for steelhead tippet in the PNW as well.