I've been scanning ebay and amazon looking at 250gb microsoft external xbox 360 hard drives. I'm anticipating the dropping prices of 360 games and want to be able to play more games at any time. How is the performance when connecting an external hard drive via a usb 2.0 port compared to using an external clip on? I've read elsewhere reading isn't an issue but writing can be slow? For the money it appears I'd be better off purchasing an external usb 2.0 hard drive and using it as my main HD to save and read from. Would this be correct? On one hand If I wait I imagine that the price of the 250gb Microsoft external hard drives will fall as more go up for sale and people sell off their 360 stuff for one of the new consoles. Or will the price be steady as more people want larger drives so they can store and play more games?