the nitrus is good, but i think you should get more hard drive space. for a little more cash you could get a ipod mini or a carbon. formated hard drives have less space, so a 1.5 GB hard drive might be less. 1.12 GB is cutting it close,and you may want to change your mind about expanding your music collection. as far as the menu system is concerned, yes you can see the playlists and songs, but i did not think it was as deep as it could have been. it goes right from genres to songs, or right from artists to songs. i like genres to albums to songs, so i did not like rio's menu system. but then again, i have over 1500 songs in my collection, so it will be easier to navigate only 1.12 GB of songs.
I've been looking at the Rio Nitrus which has a 1.5GB hard drive in it. This should be good since my collection is 1.12 GB and I don't expect it to get to much larger. How is the interface on the Rio Nitrus? Is it easy to use with menus and such like the ipod? Or is it just like simple CD player controls where you can't select playlists or albums or anything. I need some information guys!