It's alot to do with how the radio feels in your hands. The performance of most of the top brands radios (Sanwa/Airtronics, futaba or KO) is fantastic and so I wouldn't hesitate with any from those 3 brands in particular. In your price range i personally would go with the Sanwa/Airtronics MT4S as I believe this is the best radio at that price point. There are a few M12's coming into the 2nd hand market to make way for the new M12s radio that you maybe able to pick up within your budget.