Nokia- i think they have the best phones...but...they need to improve their after sales service!! i've seen ppl screaming a the service desk. there was this girl whoz phone(7710) was "getting serviced" for over 6 weeks!!! and she was called every week!
i think samsung service is very prompt.. but they lack quality.
sony ericsson is next big thing after nokia, phones are good... never tried their service.
BenQ: CD/DVD drives for PC'S are good... they should stick to it only. but they are true value for money!!
Motorola: to be very frank.. moto phones are a nightmare...esp if you are used to nokia
My Vote: Nokia