Marcus Adams follows the same methodology I do in surveying the casinos of Tunica, Mississippi. He uses my code sheets but also does a weighted average of each kind of machine in proportion to the total in the casino. I used to try to keep up with his frequent updates. However I now refer you directly to his own site for the Tunica results at Tunica Nickel Video Slot Payout Update.

Go to slot machine appendix 3A (Las Vegas nickel slot rankings).
Go to slot machine appendix 3B (Jean/Primm slot rankings).
Go to slot machine appendix 3D (Henderson/Lake Mead slot rankings).
Go to slot machine appendix 3E (Las Vegas quarter and dollar slot rankings).
Go back to slot machines.