flash memories for Cyclone IV

I am doing a design with Cyclone IV GX and I am trying to choose a flash memory for configuration. I believe I will need at least 50MBits. The altera document UG01082-1.0 lists supported flash devices, but most of them seem to be obsolete. Is there a more up-to-date list available anywhere? I would really prefer to buy something which is in stock at Digikey and 8 bits wide.