Ok, I got a Micro today. So now I have a SP, DS, SP2, & I Micro. I know it's stupid but at least one of these is gonna go. Anyway, I have to say that I am VERY dissapointed in the volume of the Micro. It's a cool portable, & I know I can use the headphone jack, but the volume of my SP's blow it away. Maybe it's because it wasn't fully charged. I'll let you know.
As of now, I prefer my SP2. I feel like the color's are richer on the SP2 screen also.