Plasmech
Addicted to ArboristSite
It is a super simple knot, that's for sure. The main reason i like it though is because it is so simple to tie. In a emergency i know i can tie it quickly, with out fault and know that it's going to hold. Might be a dumb reason but i like to keep things as simple as possible.
Doesn't use much rope either or make a lot of bulk. An 8 on a bight is bulletproof but it's a beast of a knot.