I don't really get this argument the G and the FX5 are two completely different filters, why compare them? You keep saying the G is awesome and the FX5 is junk, yada yada, who cares, they're made to do different tasks.
The price of the FX5 was much higher when it was introduced too. Saying the G is expensive because that is the market it is intended for is ridiculous. Its more like its expensive because the research and product development hasn't been paid for yet. Give it a couple of years, I bet you'll find it for less than half the price it is now.
edit to add: fact of the matter is, people will buy whatever is the best bang for the buck. At $225 shipped, the FX5 seems to be that product...and lots and lots and lots and lots and lots of people have fx5's.