I've been seeing 512 MB cards going for as little as $25 lately at Fry's. I don't know about relative lifespans of SD v CF cards, but it's worth a try. Just for kicks
(and because MP3 play is easier in CE
), I once pulled the Memory Stick out of my Sony Clie and put it in a 5-way PCMCIA adapter inserted in my MP790. Obviously, the 790 couldn't execute any Palm OS apps
(except maybe some PDB files as documents
), but it played the MP3 tracks from the MS without a hitch. It's been my experience, though, that there seems to be more limited compatibility of both CF and PCMCIA adapters in CE 2.xx.