Since I got my PE amp for sale recently, I have been itching to build a second Tempest sub. All I have to get is another sheet of MDF, ports, some glue and extras, and the Tempest itself. When purchasing the components for my first sub, I was a little uneased by buying (2)FP3s from Adire for $40. (!) They are good. I like em a lot. Easy to use. Just pricey for ports. So I saw these at PartsExpress. They look very similar. Same size, flared, and they seem to be the exact same thing. I was looking into these because they only cost $12 a piece instead of $20 from Adire. Are these the same? Has anyone heard of them or had experience with them? Should I get them?