I have been listening to as much Jazz as I can on the radio, and have done a ton of research. I already own Miles/Kind of Blue and Dave Brubeck/Timeout. I am going to be purchasing a good amount to get my collection started, and I am wondering if it is worth it to spend twice as much to pick up the SACD titles when available, or use that money to pick up twice as many cd's. I love the hirez format, but I am wondering how much better some of these recordings are since the source material is so much older. So Jazz experts... If you were me, would you spend twice as much for the SACD titles, or have twice the amount of cd's?