Reply to Saved up some cash, what do I buy?

Hi guys, I saves up some cash since I bought my DDJ-SX a while back. Here are a list of things that I thought of buying (only have the money to buy 1 item on the list):

1. Pio SDJ-60X's or KRK rokit 6's
2. RMX 1000
3. Denon SC2900

They all have their advantages, the SDJ-60X's or KRK's for better sound and a maybe a motivation to get into some music production? But above all the sound. The RMX 1000 for extra effects and 1 denon sc2900 to go along with my DDJ-SX to get more familiar with CDJ's.

Any insights or advice on this one?

Wout