Great topic! Lots of us have adopted Kenny style on Buffalo and have had some great hits. And then there's @Tab. He can make any version of Buffalo or WW pay on small bets.
I play almost exclusively old Aristo in Vegas and have done rather well recently. Look at the glass, most Aristo will have a year listed. Look for anything pre-2008. The lowest setting is probably 89%.
Try WWII at 3 reels and max bet, will be anywhere from 35¢ to 70¢ depending on machine. I've found that's a great way to stretch the bankroll. There are no bonus rounds or respins this way. The volatility range is narrowed.
Good luck
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Fair dinkum legend