By non-turbo do you mean turbine? Non turbo usually means a normally aspirated piston engine, instead of a turbocharger or supercharger, and I was not aware the Beaver came with such an engine.
Definately recommend the Aerosoft Beaver. It's a ton of fun.
About the Turbo/Turbine debate. The turbine versions of the DeHavilland Beaver and Otter, DHC-2T and DHC-3T, and know as Turbo Beavers and Turbo Otters, even though they are not piston engines.