Heh.  I am sure I will be buying Onyx at some point.  I have a 45 minute bus ride to work every morning, and I can't sleep.  It does have overhead reading lights, so I am sure I could use my regular GBA, but everyone is always sleeping, so it would be rude to have the light on the whole time.  The dim glow of a GBA SP I am sure would be ok though.  I just need to get some headphones so I can hear what FFT sounds like.  heh.