What is the most EV card counting system

[toolyp]

The numbers in those books were created before optimal Kelly betting for blackjack was studied. They are based on the old, incorrect, rule of thumb about 0.5% advantage per count.

What is the “correct rule of thumb”?
That page is interesting (https://www.qfit.com/card-counting.htm) How to interpret Ease? 1 mean the easiest to learn or the opposite?

Is there a system with no neutral cards ie all cards are graded.

[moo321]

I had used that 0.5% rule for quite some time, but after seeing Norm's charts, it's not clear if there is an approximation that works as a rule of thumb:

https://www.blackjackincolor.com/truecount2.htm

.5% works great as a rule of thumb. If you're planning ahead to play a game, you should use sims to have better information. But if you just wander into a casino and they're offering single deck dealt to the last card and you need to play it, .5% works pretty good.