For under $300 for a buggy the new Picco Boost Team Edition is impossible to beat. Superior quality, fantastic smooth power delivery with great bottom mid and top range. It has a great Carb and is easy to break in, and tune and it holds the tune as well. Ceramic rear bearing, tungsten weighted crank and epoxy filled! My only complaint is its not great on fuel and 10 minute pit stops are impossible no matter who is driving it.
We sell 5-10 engines a week and the only other engine that gets the rave reviews is the FX but it is not under $300.