It's new, but it doesn't really solve the problem of affordable storage for portables. Plus, I still wish the 600 had 64MB of internal memory. 32MB is just so little music. I always write about volume because a lot of early players, and even some new ones, were way too quiet. The volume scale goes to 20 and I rarely go over 12.
Full volume is dangerously loud.
All players should be this loud. The 600 really sounds great all around. There are six sound modes, a flat setting, and a customizable setting. Surprisingly, these modes sound really good. Each actually has a distinct, too.