I have a Zu Denon DL103 that came with a turntable I bought. It sounded awful and I was going to throw it away, but decided to send it to Andy Kim to see if he could bring it back to life. Boy, did he ever!
I have a Hana SL and it's a very nice cartridge, but the Zu has more detail and is more lively, if a little less "refined" than the Hana. The Hana is a fine cartridge and would be different, but to my ears, not "better". If you like a warmish to neutral sound and if the Zu is a bit too wild and wooly for you, the Hana might be a good choice.
I suggest reaching out to Andy and see if there's a way to tailor the sound of the Zu more to your taste. That would be the best "bang for the buck" option in my opinion.