Stagfish: The DX5e will work with a lot more than the AR500 they come with, , AR6300, AR6100, etc, they all work with it.

As for a suggestion for a starter 2.4GHz set, I would suggest a Planet 5 for an antweight, because of the lightness of the receiver, but there is nothing wrong with the Radio Link set, I am using them for the K*bot Division 3 units, works fine for a long range, longer than you'll need for a robot.