I really like the Natural for a true Urethane reaction. I also have a Avalanche Urethane that I like, but find it to be stronger than the Natural and also more responsive on the backend due to it being a pearl urethane. If you want something buttery smooth and early rolling, go with the Natural. If you like something with a bit more backend reaction, go with the Avalanche Urethane. Of course, other urethanes such as the Ogre Urethane, Blue Hammer, etc will all do the job.