Which one is better a sidekick 4 or an iPhone?

ok so i think that i sidekick lx is better because the iphone is cool but it's expensive and it takes years to type with. what i'd do if you've got an ipod touch 2nd generation download truphone it makes ur ipod become a phone so instead of buying an iphone buy an ipod touch and a sidekick lx if you want an iphone i still wouldn't buy it because all the apps and music don't make it a phone right?