Which Android phones are the best?

[CuBz]

I upgraded to the Xperia X10 on monday but i still have till 27th september to choose a different phone.

I really hate the Xperia X10 after only having it a few days. Also, I hate all mobile operating systems that I have tried, apart from Android (which a love...deeply), so I prefer an android phone. I was wondering if anyone could list some of the best android phones (in order of best to worst) available on T-Mobile UK now or available within the next few weeks (or months maybe).

Thanks in Advance