Can't the 505be priced around $250, right in the middle?
BTW, thx for the video review. I've crossed the 600 off my 'possible' list. Still thinking seriously about the 300 (portability is key, and I just read novels on my Readers). I might go with a 300 if it feels right in person, or else pick upa cheap505 (so my gf can also have library access--her 500 is falling behind the curve, unless Sony issues an actual 500 firmware upgrade!).