I love his song 'water', infact the whole album grew on me, i wasnt keen when i first heard it, but he's pretty good, I dont think his music has the life and energy of the red hot chili peppers though
Try listen to album called Inside of Emptiness I think you would like it the most.I have always like his style with Red Hot Chilli Peppers and I have only listen to his solo work later but I think it is much more deep and very different but I like it more.