I have been looking at the Pure Chronos DAB with iPod dock. Although it does not say that it supports the iPhone, I know that a friend of mine has one that works fine with it.
You have not said what sort of functionality you want from it. Does it just need to be an alarm clock and charger? In which case, a power lead and using the phones own alarm would suffice.
Do you want radio, DAB radio, CD etc....?