I had a session with Tracy Ko where she described my Human Design chart for me. I was very impressed with this. I have some experience from other systems, but from Tracy, I got more information and insight than I have received before.
The other systems I have tried are 1. Western astrology 2. Eastern Astrology 3. Western personality tests.
All these are really good, but I must say that Human Design gave me more. Human Design does not just say "You are this type", but also "these are your values" and "this is your life mission". That is a very big extra step that I haven't seen anywhere else. It certainly brought a lot of value to me.
If you want to go really deep, then I would really recommend Human Design. I think you will be amazed at what you'll learn. I certainly did.