The Tamiya Sherman from Banzai Hobby, is at a good price, but it delivers with a 2 channel radio and you do not want that for an infrared tank. So read what is included in the kit carefully. If you go that Sherman direction you would want to buy an rc radio system separately, say a Futaba Skysport 2.4 four channel radio for around $98.00.

http://banzaihobby.com/tamiya-56013