Nitrous Oxide - What piston rings are everyone using?

Anyone who is running a 225+ shot what rings are you using?

Also how have they held up? How many runs/miles? and are they still going with out using any oil?

I plan on using hell fire in mine. People have been having a lot of success with them. Here's a little info on them:

Hell Fire® Rings

Speed-Pro Hell Fire rings, manufactured from a specially hardened and tempered ductile iron alloy, are engineered to thrive in extreme racing conditions.

These rings retain tension under the most brutal operating conditions, including engines that rely on megadoses of nitrous oxide. Proven in Pro Street, IHRA Pro-Mod and NHRA Top Fuel & Funny Car racing, Hell Fire rings will not flake, and the SS-50 oil rings keep chambers dry, preventing detonation.

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Hell fire on anything that will see N2O.

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Cool thanks for the replys hellfire is what i planned on but just wanted to make sure

mine are stock.....no problems here. only tuning runs....but it will see the track soon.