I have sold a lot of planet audio subs. They are made by boss. Now most people know boss as being a cheap brand. and it is. But they have stepped up their performance. Everything boss made now comes with a 6 year warranty. Stay away from the Torq series thought as far as planet audio.
they are using this six year warranty to lure people to buy. i dont know if they grant that form online purchases but when i sell them its covered for six years