Any company's trainer will work fine, but I do second the vote on the Avistar if you're working with an instructor. As for cost, if you buy everything new, you're looking at around $100 for the field equipment and a can of fuel. But before spending your money, ask around at the club and look at the sale forums on RCU. If you catch a guy going from glow to electric or upgrading his stuff, you can pick up a field box with everything for about 1/2 price usually.