I find the kiwi commentators to be among the most biased and unprofessional. That being said they are also very entertaining.
Being an Indian id say that ravi shastri is pretty biased and ramiz raja is one of the more unbiased commentators we have around.
on a more humorous note Damien martyn kicks azz, akram is practically Indian now (look at the time he spends here) and Sir boycs is by and large the legend i miss the most. he and sidhu set the roof on fire.