Heck, we use a 21.5" iMac to dj with. Works great and no eye-strain. And we don't look like every other dj, who uses a laptop. Not that there is anything wrong with that.I also think a 17 is too big and imo, a 13 too small. I referred to the 13" specs because you were talking about the 13" MBP. The 17's also don't seem to have as many options and performance as the 15's do.