Pivots, support, resistance; oh my!

Ok, I know this is an opinion post, but I have 2 questions:
1. which way do you prefer to calculate sr levels and
2. in the first one, is "range" H-L? The article I got it from didn't say.

A.

1. R4 = PP + RANGE*3
2. R3 = PP + RANGE*2
3. R2 = PP + RANGE
4. R1 = 2 * PP - L
5. PP = (H+L+C) / 3
6. S1 = 2 * PP - H
7. S2: PP - RANGE
8. S3: PP - RANGE*2
9. S4: PP - RANGE*3

B.
PP = (H + L + C) / 3
then

1. R1 = (2*PP) - L

1. R2 = PP + (H - L)

1. R3 = H + 2*(PP-L)

1. S1 = (2*PP) - H

1. S2 = PP - (H - L)

1. S3 = L - 2*(H - PP)

There are many more to get confused or say as choice!
Check them > HERE <

There are many other links discussing what is better and stuff !... i lost some bookmarked links !
Regards


P.S. Let me know if one method/equation made more pipsthan other...just in case you find some statistical edge in a comparitive study

will do