Buying a New Mobile Phone

I'm thinking of buying a new mobile phone and my choices are the htc sense, the iphone 4 or the samsung galaxy.

I'm considering a lot of factors in my decision, and not just the price. I want a phone that will be easy to carry around because I am very mobile and spend most of my days outside.

Also, I want a device that is easy to use for text messaging - an interface that fits my hand and dexterity. A gadget that has a clear audio for voice calls even if outside in a crowded street.

I want a phone that can surf the internet through WiFi, has downloadable apps and a good gaming device to "waste" time with while I'm traveling.

So now you see my dilemma and I think I have to spend some more time in deciding which one to get for myself.