The radio station I dj for has Edirols. I use an RO-9 which certainly gives broadcast quality sound.

I did some stuff for a bigger station recently, two of their stations. One guy had a Sony (bit of a posh Edirol he said).

The other had a recorder the size of a DAT machine with a a small card holder that was replaceable in a kind of caddy. Not sure what that was.

HTH