How does Fi compare to mainstream products? say a kicker cvx 12", l5 12" or l7 12" , or rockfords p3's 12" or t1's 12" to a Fi ssd 12? ive never went outside of mainstream and everyone i know localy says its a bad idea to stray from mainstream products and they wernt happy when the strayed from the mainstream. ive never heard an Fi subwoofer in person just internet and ive done all the research i can to compare, is Fi really a good company or are they just slapping stickers on their prducts when in actuality its really a cheap crappy Chinese made product?