I'd recommend finding a good OS 70 Surpass II(like this one, http://cgi.ebay.com/OS-70-4-stroke-e...item1c0db11283 ). They are very economical to operate and last a long time. After you have been flying for a while you will learn that OS engines may cost a bit more, but rare is the person that doesn't have good luck with them. It so often happens that when a someone is having difficulty with an engine it turns out to be an Evolution, Thunder or or Super Tiger(Tigre), etc. The OS fliers just start up and fly.