new t mobile phone??? plz help?

[Olivia]

right know i have the nokia 5310 and i like it a lot and my mom said i can get a new phone i first i was thinking to get the same one but i different color cuz i like wat the phone offers but know i just decited i want a whole new phone i was thinking the side kick lx in the color purple and black but that color is not on the website no more does anyone know why also is a side kick a good phone?? what phone should i get from t mobile