I dont no which mobile phone to buy?

I want to purchase a new mobile phone but i dont know which one to choose. i would like either the sony ericcson w580i, w610i or the samsung u600??
Answer
Take a walk into your local phone shop, pick up each of the handsets and have a play with them - see what they can do, and what they cannot....if one is missing something which is important to you does one of the others have that feature. after you have had a look at the user interface, features, price etc ask the shop staff if they have had many returned or are there known issues with them. take all those answers into account and choose the one which suits you best for what you are going to use it for i.e. texting, taking pictures, making calls, listening to music etc.