samsung maybe pag-masa.... but the S2 is definitely not.
pang-masa naman sad ng iPhone, our previous maid had an iPhone 1st gen... but can you say pangmasa ang iPhone 4S?
User preference always wins.
if your a Mac user, go for 4S.. iCloud will serve you well.
if your a Technut, go for S2.. Android has a lot of avenues for end-user exploration.