Looking for a new phone....

The main function of any phone is to be able to call people. Majority of modern phones manage to do that quite well.
The only defining factor should be aesthetical pleasance. If anyone tries to tell you otherwise and start jabber about CPU's or GPU's smash 'em with a phone. The kind Bell invented, not mobile one.

I am not looking for, "endgame gaming phone", i got PC for that.
So i would really like to hear the reviews of users and then jump in details myself.

Say what you want to get from your phone. Otherwise I'll offer you a Nokia C5-02.

I might be getting the HTC One next, got upgrade going in June. Really curious what Vodafone is going to offer me.

Not a phone for you though, much too expensive when your budget is "only" 250 dollars.

Do you have a preference for an operating system? Android vs Windows for example?
The good thing about the Sony ones is that some of them are water tight, which means they also wont allow dust to come in.

I myself have Xperia U. It's a great phone all in all, quite powerful, as long as you don't switch to Ice Cream Sandwich. If I'm not wrong it's more powerful than Sola at about the same price, one of the cheapest Xperia series phones. The only flaw is integrated memory card, thus not allowing you to change the amount of memory. However it is 4GB for system (of which you can use 2GB) and 4GB for data, of which you can use all 4GB.

Xperia Play => emulator fun

I have this phone. It is cheap and plenty powerful. It runs everything I have wanted it to. It is easily rooted. I suggest installing Cyanogenmod to any phone that you get. It has much better performance and more options.