This is a close one for me own both. They are two of the best pins ever, I’m not the greatest player so have not reached anything close to the end on either but DI has easier shots and is so smooth and super loaded it reminds me of a modern TZ.
JP is more complicated and harder for me to progress but is a bit more exciting at times.
I prefer harder pins so likely if was only getting one it would be JP.
However this is one I’d try to get both.