I'm still using my 20 year old Pioneer Elite 300 disc changers [I added a second one about 10 years ago], and love them. I've tried some higher end single players, but they didn't sound any better to my ears. Even if they did, the ability to store 600 CD's and access them all via one remote is worth any slight sound difference I might notice. The discs are rarely touched, so they stay clean and mint. They are remarkable machines, they never miss a beat and have never given me one bit of trouble. Pretty amazing for a machine with the complex workings of a 300 disc changer. The Sony ES line is very similar to the Elite players, and they can be had in 400 disc versions. I don't know if one is superior to the other, but I can't imagine switching from the Pioneer Elites.