I love Lush. I own all of their albums and was fortunate enough to see them twice on tour in small clubs before their drummer killed himself.
Split is indeed their greatest work and "Desire Lines" is pretty much one of the best songs ever written. Simply an amazing piece of work. I really liked their final album too actually; "Heavenly Bodies" and "Last Night" were awesome songs.
Glad to hear other people still remember and listen to them because they were a highly underrated band.