Well the best ones out there right now are the Samsung Moment and HTC Hero. They have android systems with android markets. The android market contains over 20000 apps and over 66% are free. Its a great phone. I have the moment and its truly amazing. The touchscreen is so smooth and easy to handle. The keyboard is big and the keys are big as well. There is a fourth column with numbers so no need to press ALT then a letter. the numbers are right there. Its a great phone
