There is a sticker that says 'Multichannel Hybrid'. I buy only those, as they contain both the 'Redbook CD version', which can be played on any CD player, and the multichannel version.

All of Chesky records SACD titles are hybrid

Media Play has a good selection of SACD hybrid MC, DTS-CD, and DVD-A.

A recording company called Heads Up is in partnership with Telarc. They sell direct and link to Telarc's site where there is good info on SACD and DVD-A.

Again, no matter where you buy SACD, look for the grey and white 'Hybrid Multichannel' sticker. Two discs for the price of one.