Ok, I have the best answer
Neither, if...
If you have a bluetooth enabled cellphone with a decent carrier, get a nokia n810 umpc. You can stream any song any time, any where. Wicked. That's what I use. You need the cell phone as the tablet will use the phones internet over a bluetooth connection. Never load an mp3 again
Granted, it's really way more than a media player, but it is a wicked one