Daisenin is the more enigmatic garden counterpart to the clean lines of Ryoan-ji. Another “Zen Garden” with its dry raked gravel, Daisenin has an intimacy and series of boardwalks that give a serial, sequential feel to its spaces. The piles of gravel in the main garden have the appearance of a hybrid, somewhere between that of Ginkaku-ji perfection and Ryoan-ji gravel and stones.

For more:
Great Analysis of the Garden from Jgarden.org
Japanese Based Page with good information on the evolution of the  Japanese Garden