In the daringfireball.net review Gruber specifically mentions in benchmarking the 5s outperforms the 2008 15" macbook that he has. It's hard for me to justify

In the daringfireball.net review Gruber specifically mentions in benchmarking the 5s outperforms the 2008 15" macbook that he has. It's hard for me to justify from a 'need' perspective to go from my 4S to the 5s, since to be honest the 4S has no slowdown at all and is a great phone. I'll probably end up donating it to my mum and moving her from dumbphone into smartphone land.