The Search for the Perfect Mobile Phone and me.

I'm on the hunt for a new mobile phone.  Where the heck do I start?  I really don't see the point in spending a heap of money on what is basically a "throw away" element of my life.  I've had so many mobiles since I was 21 (about 6 different ones so far), and none of them have been something I desperately needed to hold onto!

So far, I've narrowed it down to a few.  But, the features, specifications, megapixels...???  huh?  Why do I need all of these functions?  Basically, I want it to be able to make/receive phone calls and replace the diary I lug around in my handbag, just to streamline things a little (and to stop this aching pain I have in my shoulder from hauling that Tardis around everyday!!).  Where to next??