I'm considering the purchase of an iPronto because I find that my TSU7000 does not have enough "screen space" for my needs. I would like to be able to put more buttons on the screen so that I have them handy without having to change screens, and I figure the iPronto's 640x480 screen will work better for me than the 240x320 screen on the TSU7000. Is this valid reasoning?

Second question - There seems to be a huge range in price between various online vendors. Online prices range from $1100 to $1500. I saw one price in the $850 range, but they were sold out, and I saw a $799 price for refurbished units. Where can I get the best deal?