The Mecoa, Megatec, and LEO are one and the same. They are more or less a copy of the old OS 46 SF. They run about the same as it does.

Using the trade in deal, the MECOA would be the cheapest. The trade in on a GMS would be next.

Just to outright purchase one, the TT PRO 46 is usually pretty cheap.

The GMS and Tower engines are both made by GMS. They all run about the same. Tower even sells both brands. These engines usually have a little more power than the OS 46 FX.

Enjoy,

Jim