Nitro is where it's at. Nothing beats the sounds of engines revving. The smell of burned exhaust. E-buggy just doesn't come close; it's like watching an action movie on mute.

OS does make the best engines IMO. However, I wouldn't start off with a brand new OS Speed to get back into nitro racing. Find something in the FS thread here. Something you won't be upset with if it blows up.

I recommend watching the JQ RTR engine break-in video.https://www.youtube.com/watch?v=7UrtP8eyNP4

It takes a while to develop an ear for engine tuning.

Be careful to avoid trying to tune away a mechanical problem.