So what's everyone using? To me they seem awfully damn expensive for what they are. I recently came across one from Spectre for about $100.00 but I have some concerns about it. i) It doesn't say if the filter needs replacing or not. 2) The box around the filter doesn't seal to the hood. 3) The tubing from the filter is aluminum which while it may look cool I think would attract heat froom the engine compartment and defeat the purpose.

So, anyone running one of these from Spectre? If not what are you using? How do you like it?