If you want to have a quiet moment with your friends and have mountain views, Cebu has tops, island in the sky, etc.
Cebu is also acknowledged to have one of the best diving/ snorkeling spots and beaches from Mactan, to Moalboal, to Sumilon, Nalusuan, Hilutongan, Bantayan and Malapascua. If you're into falls there's Kawasan and hidden paradise. If you like pools, there's plantation bay...
Dining out isn't a problem because Cebu has many restaurants offering different cuisines...
There are malls and tiangges for those who love shopping and for those who love to party, there are plenty of bars to choose from.
For the culturally inclined, there are museums and historical places of interest. For those who would like to go on a pilgrimage, there's Simala in the South and the Our Lady of Manaoag Shrine in Carmen.
Davao is nice, and it's always fun to go to a different place and experience the food and the ambiance there...
However, for me
CEBU ROCKS!