Which Mobile Phone Do you Like?

Currently the Iphone has been launched in India and many are excited to use it. But I like phones of Sony Ericcson and HTC. Sony ericcson has good specifications while HTC mobile phones will provide you with Touch Flow technology which is awesome! Its same like Iphone. My first mobile was SOny ericcson W550i which really made me mad. I was overwhelmed by its quality of sound in headphones and the crystal clear sound from its speakers. At that time I was in college, so there it was a huge hit coz nobody had purchased a phone like that. So after seeing my mobile phone, even my friends purchased it after few months. Then we used to keep one mobile phone in one corner and other in other corner and so on. Then play the same music and enjoy true surround sound! It was really exciting and fun. Now I own a Nokia N73 Music Edition which is good but cannot be compared with other mobile phones of sony. Only the problem in N73 is that is hangs a lot. So which phone you find the best and why you like it. And also tell which you currently own.