They have survived for much longer than I expected and their success in America surprised me- they have probably been the most successful new British group over there in this millennium
Story of My Life was good. Some of their songs are very derivative though- What Makes You beautiful starts with the intro from Summer Nights and a recent single sounded just like Def Leppard's Pour Some Sugar on Me
I personally think they're an incredible example of an impressive marketing machine. Having said that, we've had plenty of artists that record companies have tried to promote in the same way that haven't been as successful. On their singing and performances I think they are both ok, if uninspiring.