The people that have business intetests in our hobby products are the ones most annoying in this forum. Happens all the time. Say anything negative about an engine, if they are politically or financially invloved in that engine, you will get trashed.

Back on topic, I hear great things about both DL and Area 51....light and very powerful. That's probably the next 50cc engine I would buy. BTW I have no business interest in either one. I only have an interest that it runs good for the money I spend on it....and that my airplane doesn't get damaged due to a flame out (that I didn't cause).