downside

I found these cheap exhausts and I was wondering what might be the problem to these. I'm sorry, I'm kinda new to this. I've done a lot of research on exhausts already, and I'm not sure if I could afford the really expensive stuff. But if the exhausts aren't worth it, then I'd rather save my...

Other then price tag of K-PRO... what is its downside?? and if youd like list all the upsides too if ya want.

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My sister picked up one of those hand buffers cause she's lazy for her 1.6EL and man she waxed the whole car in under an hour, it looked wicked. Im considering using this thing on my RSX instead of old elbow grease. You guys know any downside to using a buffer? It's about time I threw on some...