Be suspicious of a "scale" version of a "Me-109" if they haven't researched the original enough to know it was a Bf-109 (there is no such thing as a Me-109).

I like the APC for most all glow uses. On trainers the less expensive the better for the first few solo landings. A prop that doesn't shatter may put styresses on the engine and firewall that will haunt you. For my gas models I like the Pro-Zinger props. They look good and are lighter.