be sure to thank a broker even if you have an NIB loan, NIB are often touted as 'best value in the market' actually 50-70% of all people are on variable rates and that goes for NIB's book as well! their variable is about the worst there is, so really their customers on the higher rate (who are usually not financially literate) are subsidising those on the good rates.
but i digress, why thank a broker if you are an NIB customer on a good tracker? because brokers actually brought tracker mortgages into this country, go back in time and look at NIB's proposition before the dawn of trackers and it will tell you an interesting story.
NIB only brought out trackers due to market competition that was created because of brokers, there is a lot of anti-broker sentiment, that's o.k. but you can't have a tracker mortgage and not like brokers, trackers after all, only exist because of brokers