I would choose the Toyko Marui G36. The Jing-Jong is a replica of the TM G36, so your basicually getting a lesser quality TM G36. Also make sure to buy a charger! Battery is no good without a good charger!
Link to a charger: http://velocityarms.ca/index.php?mai...roducts_id=208
ICS M4A1 Carbine
2 m4 hi-caps, 5 m4 mid caps