What is good about Serpent is the ability to mix parts with other models. Many of the "Pro" parts from its bigger siblings will fit the S710. Also the aftermarket goodies are growing. Another plus is the MYTSN forums for help and support on setup with feedback posted for questions you may have on a particular part.
Kyosho, Mugen Seiki, Maxy's Fuel, KO Propo
O.S., Ninja JX, Novarossi, RMV