There are some other engines very much like the US41. One is sold by Ried's as a Cheeta 42. There is another company that sells quadra's called B&B. The US41 and the cheeta 42 are both versions of the quadra 42.

They are an old stand by that have been around for years. I think that either would be excellent for a first time gasser.

I can think of a lot of gas engines that have more power than the US41, and they weigh less too. But all of them costs more.

There are a lot of airplanes designed to use the 41. It will give you many years of dependable service.

Good luck

Jim