Yeah, I know about microdrives (last i knew they topped out at 12GB, but haven't looked in awhile) I have no use for a microdrive (had one once, it was slow and killed my battery life so I sold it while it had value, think I paid about $150 for a 320GB version now I have a 1GB CF card which costs what, maybe $20?)) and using compact flash would not be easier on the Pandora seeing as how it doesn't have a compact flash slot so it would require rather bulky excess, while if the .85" drive would have been produced it was supposedly supposed to essentially be an SD Microdrive, which we could have used, and if the one inch drive you mentioned has gotten to 40G, it's not entirely inconceivable that the .85" drive could have made it to 20 or 30 gigs by now had it been produced. Still though compared to SD cards it would be more expensive per gig and have a faster failure rate.