I love my 700. It was my valentines gift this year and I love it. My mother in law got the kindle 2 the same day and after playing with both of them i love mine. The only problem i had with the 700 was it wouldnt keep a charge when charged via computer. However, after purchasing the wall charger, it stays charged for weeks at a time
As far as the screan goes, i dont have much to compare it to, but i will say this, i have always gotten horrible migraines when i read but i dont when using the Prs-700. I hope this helps