OK, I think the BlackBerry Media Sync program is absolutely the best for people who are using iTunes for storage of music files and playlists. Media Sync helps to manage the memory usage on your microSD (or handset memory) as well as syncs your iTunes playlists intact with album cover artwork. AFAIK, none of the other media sync programs do this cover art inclusion unless you actually embed the album art manually into each MP3 file. With BlackBerry Media Sync, everything is a total snap with iTunes.
I completely agree with this. This makes my blackberry feel more like a media player like my iphone.
BTW, I've completely converted to the Curve from my iPhone. I've often considered going back, but the features and useability of the Curve makes it a hands down winner.