As a bit of anecdote for those who are considering buying a mechanical keyboard but aren't sure which to buy:
A friend of mine has a $160 Filco with green switches that he's been using for over a year. He types on it at around 95 WPM. Once I had him try out my $100 green switch cooler master. After a few rounds on typeracer, he was averaging 110 WPM. For experienced typists who are already very fast, the extra stiffness of green switches can be a huge boost for productivity. Plus they sound extremely sexy.