If you want to use it in B class combat, you need to use a .30 or smaller, obviously.

In B class, you have a number of strong engine choices. The most popular is the OS .25FX because of it's solid power and high reliablity.

I use the Magnum .28XL in B class. It has power, but it's carb is tempermental.

If you want to spend a lot of cash, you can get the Jett .30, though nothing I've seen indicates that the money buys you anything over the OS. They are durable, powerful, and reliable though.

Norvel makes some quite powerful .25 engines, but they are tempermental. Guys who know how to make them work get great results from them. Guys that don't, miss a lot of starts.

Irvine is also popular, reliable, and quite powerful. I don't know much about them (though it looks like I might pick one up soon, so ask me in a few months how it comes out)

As for the plane, while I might have flown against one here or there, it doesn't come to mind, and it's not what the top guys are flying. I think you could best describe it as a good-looking design that hasn't really been pushed by a top pilot yet. It might be more popular in other areas though, so I don't know for sure.