Foxy is right guys. There are certain engines that will be a bitc* to tune, and some that will do it themselves per say. Some engines are easier to tune, while others give you trouble. To handle all the changes, your skill on the topic should tell you what to buy. My first nitro was the old savage .21 that i bought used. I'd have to tune it every other week. my buddy had the same savage with a brand new never broke in xtm motor. he had more trouble tuning than i did. I like nitro because of the noise and the smell of nitro and the overall driving experience. But some nitro items can be pricey. I went to electric after 6 years of getting rid of the savage. i got the bandit vxl. blazing fast and fun, but didnt seem the same, but was still awsome. so my point being... if the OP has experience in nitro and has the money, get a nitro man! you will learn more about rc's with a nitro and hand on experience with a nitro than an electric. </p>