The ITG also has an edge in consistancy. It really does have massive dust load capacity before flow is restricted. For typical road use you'll probably never need to service it. Once a year I pull mine out and brush it off, thats it.
FocusSport will sell the ITG filter. They use it in their Cool Flo but they'll sell the filter separately. They can order a different size too if you need. I'm sure they'd prefer to sell you the whole Cool Flo intake, but they're not above selling the filters to those who want upgrade their exsisting intakes.
Hmm..I have an "Ebay"intake with a K&N filter...and I'm so sick of it..the pipe wont stay on the throttle body. even with 2 clamps. I'm sick of it so I'm gona put the stock intake tube back on but put the KN filter on it...the power should be about the same right?