Which phone would be more useful as a combination phone/pda if I'm going to use it for school?

IT DEPENDS WHO YOU GOT AS A PROVIDER,ME I GOT SPRINT AND I FIND THAT THE TITAN/ MOGUL WORKS BEST CUZ IT HAS A "QWERTY" KEYBOARD AND TOUCH SCREEN ,JOG WHEEL AND BLUE TOOTH, WINDOWS MOBILE 6,WIFI, INFER RED... YA-DA YA-DA YA-DA...YOU GET THE POINT,OH IT HAS MS WORD, MS EXCEL, MS POWER POINT..VERIZON HAS IT SO DO MOBILE,BUT THEY CALL THERS THE "WING" IF YOU NEED MORE HELP EMAIL ME..