Serum / Sylenth / Massive - Which to learn?

Picked up Syntorial a while back and there are free lessons packs for Serum, Sylenth and Massive amongst others.
 

Not completely new to production/synthesis, but decided it’d be nice to learn in a nice cohesive linear fashion for once. Bread and butter up until now has been Operator and Elektrons. 

Going to pick one and get stuck in, any recommendations as to which synth to go for? 
 

I’ve never used any but you can probably achieve the same epic stuff by using instrument racks in ableton.

also, wavetable on ableton is probably as epic as the ones you mentioned.