Which bass is better: Ibanez ATK or Warwick Streamer?

I am into playing slap, and I can play like half the RHCP songs by flea, but neither of these are availible in stores near me and I hear they are really good and are at a low price so I thought I should get one of the 2 , I currentley have a 5 string GIO Ibanez and It really bothers me because it is 5 strings