I have had a c240 and a c250 for at least 2 years and love them both. I am running 4gig cards in the c250 and need to know if it will handle larger capacity cards.
I assume your players are of the v2 variety which natively supports the SDHC ( >2GB) format cards. If so, the larger capacity cards (up to 32GB) should work as well.
The only fly-in-the-ointment might be that with the larger cards, you could exceed the player’s recognized track/file limit. I don’t know what is is on the c200 series, but on the e200 series it was approx. 2000 tracks.