I subscribe to the theory that the best knots are those that you can tie consistently well.
Absolutely !

For me its the four basics

-Blood Knot
-Cinch Knot
-Turtle Knot
-Why Knot

The why I use for the water thats looks non fishy, why knot give it a try anyway..
I have caught many fish with the why knot.. Mostly in the foam seams ..