Page 1 of Phillips DVD Players

I have a friend who would like to know:-

Whats the diff between phillips 750 and 751. Comet have a great deal on them ATM £179.99. http://www.comet.co.uk/

Also, I note Phillips have bought out a new line of players & Comet again sell the PHILIPS DVD612S for the same price £179.99.

Does anyone know which one is better? the 612 looks ugly! Also will the Phillips hack work on this 612S.

Any help would be appreciated