Djokovic for 2-hander. why? cuz he can flatten it out, topspin it, angle it, not to mention he has excellent 1-handed slice, drop shot and volleys. 2-handers should never never never neglect learning a slice and drop shot (you can execute these shots two handed also but I encourage you to learn to do them 1-handed for reach and control. stick to 2 hands for your normal groundstrokes if that is your expertise.
Look at Tommy Haas' topspin backhand and you can't go wrong bro.
WARNING: This signature may contain extreme traces of bullying and glory hunting TOMMY HASS 0 slams () and 0 finals 0 consecutive weeks at world no. 1 0 consecutive Laureus World Sports Awards 0 times qualified for YEC 3-13 H2H against Rogi Featherer 0-5 H2H against Rafito Nadal
Career low ranking: 1,241 (26.06.1995) 0 fake mullets flaunted in Roland Garros finals. 0 double bagels consumed against Raonic on grass 1 first name in common with Tommy Robredo