About 20 + years ago I decided to simplify my knot thingee and switched to a Uni Knot (Duncan Loop) for ALL
my leader connections. I now use these between my leader and tippet and no longer burn through leaders when I must add new tippet:
Back in Summer 2010, Dave Whitlock made the argument for using this " one knot", in an article he wrote for Flyfishing & Tying Journal
...it has worked for me - for a very long time...