Allright, if you're not buying in Europe, the .52 will be a good choice.
My .52 run great, it's a sweet engine...and I think it's perfect for you to get as your first fourstroke. Very userfriendly and is flyable after two fuel tanks of break in.



Today I broke in a Magnum .52fs I bought, it runs great as well and is cheaper than the OS .52.
The OS is 'nicer', better finish and easier to break in, but this Magnum feels good, I have hopes for this one