I looked around the forum for some time now, and cant fine a thread discussing nitro engines.

What nitro engines are the best for the money, where can you buy them, and what would an rc engine that is quality usually cost me to buy? There are so many listings on eBay that run around $20-$30 for a somewhat rusted "working" engine. Where can I buy one new? That may not exactly be what I want though, as new may cost quite a large sum of cash. Now onto my new issue, what is the best fuel to run them on? I have seen so many brands of fuel, such as Traxxas, and Cool Power, but I am not sure which would work best in an engine. My thoughts are that it doesnt exactly matter the brand of fuel you buy, but the nitromethane and oil levels in the fuel. Am I correct in saying this?

Thank you all for your time,
Noah