I have used Karakal PU before and they are just hard to find and expensive. Recently I tried the Yonex Hi-Soft and Dunlop Hydramax PU grips. I am very satisfied with them. These grips are cheaper and performed very well also. Between the Yonex Hi-Soft and Dunlop Hydramax PU, I like the Dunlop Hydramax PU because somehow they feel better on my hand.