Best SACD Player Help Needed

I'm interested in purchasing a SACD player and would like opinions on the format as I understand that it is fading. I have a Onkyo CD changer and would like assistance with the forthcoming upgrade. I have Martin Logan SL3s. What should I expect in regards to sound quality with SACD and with an upgrade in CD player? How will my current standard cds sound? Any advice, Suggestions, or website references will be appreciated.