DDJ-SB3 vs DDJ-400

[No Sleep]

I'm trying to get into software DJ sets. Whats the best option for a beginner? Right now I've narrowed it down to these two controllers. My biggest question however is the software Serato vs rekordbox.

Just trying to figure out which is best.

 

[TEKBEATZ]

DDJ_Sb3 with serato

Never tried rekordbox

 

[iceberg_is_on_fire]

I have a DDJ-SX. It and serato is dope.