Sonny is a better game. It has a more interesting storyline. It's really long and difficult. The graphics are better and it has a save feature. It's really addicting and can be played for hours.
Here's a couple of things... The Last Stand-Great game,lots of weapons,good graphics,nice sounds,nice story,2 parts,3500+ different zombie models and so... Sonny-Also great game,also lots of weapons,not good graphics,the characters speak,the sound is not so good,no second part,also nice story,kinda hard,LOTS of enemies,lots of weapons,you can change your uniform(items that are showed on your character) and so... So i think that both games are great but i vote for The Last Stand.
