I reckon this subject comes up once a month!!!
For me, it's the Slim Beauty all the way. No double, easy to tie, a very slim tapered knot, tapered the right way, and strong.
I don't know why blokes use doubles any more, (except for wind ons and twisted leaders), they're not needed in braid. Especially light main line and leaders which is what you've asked about.
Do a search mate, everything you need to know is there.
Jeff.
ps. never test your knots with a sharp tug. Always test your knot with a gentle tug applying pressure as you go. A quick short tug will break most knots in light line.
Cheers.