WTB – compare Cutlass 7 JR, Kaizen 7 or JP15-7

Can you share your experiences with all those models – Cutlass 7 Jason Richardson Majora Purple, Kaizen 7 or JP15-7?

Want to buy one of those and I know, all of them are very very different. JP15-7 is the last option that I am thinking about to be honest. My main interest is between JR model or Kaizen. I already own Majesty 7 20th anniversary.

Thanks in advance for your opinions/thoughts