Headhunter
Senior Master
Don't agree with that. Kickboxing has the basic punches and kicks and knees. But in karate there are a lot more moves than kickboxing. Karate has chops, palm strikes, back fists and more circular movements. Plus it has a different defence system with the blocks they use. Both are great styles but are differentI didn't know kickboxing had a belt system, anyway I would take up the Jiu Jitsu since taking karate will basically just show you a different flavor of what you already been doing.
Jiu Jitsu would be an entirely new experience for you.