it is not just the write speed... the card has to be able to do SUSTAINED writing. i have a PMD 671 that writes fine to my basic ScanDisk 4G card but I cannot get either of the two 4G Delkin cards to write w/o a short 1-2sec burst of static on my recordings - VERY FRUSTRATING. talked to Delkin today and their answer is that they only expect their cards to write in bursts, not 4hrs of constant writing as is happening w/ CF recording.
Marantz only recommends Lexar (the priceyest but the most reliable), PNY, Viking, Hitachi, and IBM. (the last two are only microdrives, i believe and they do NOT work well in my 671 - see the marantz thread in this section)
neil in san marcos
i have two 4G Delkin cards available for sale, anybody want'em? they test at 5000+ kbps in the marantz...