It's hard to compare because I'm at a differant place in my life than I was 15 years ago.
I trained in ITF TKD up through 2nd dan. This was very enjoyable at that time.Then I hurt my knee and my tournament career was over. That time was fun but very "me oriented."
Now I'm three years into my second MA life. Traditional (GOJU ryu) karate with its self-defense orientation. This is much more rewarding to me at this time in my life.
Starting over as a white belt was so liberating for me. It made me realize that I wasn't that great and It was time to get a new attitude.

Mark