RE: advise wanted!
Engine choice is one of those things people either have a love or hate relation with. I'm not a big Magnum fan but you will find others here that think they ar the greatest thing going. The price of these engines make it a great buy but if money isn't a big problem you may want to look at OS and Saito for a first four stroke. Look and see what other pilots in your area are using and ask questions, having others that can help you out with problems is a big help with a new engine.