Anyone know if the db platinum series or the quantum spl series is any good or is the re sx still better than both of these?

http://www.audiosavings.com/products/10-Inch-Car-Subwoofer/NEW-DB-DRIVE-PLW10D4-10-1600-WATT-CAR-SUBWOOFER-SUB/PLW10D4.aspx

http://www.audiosavings.com/products/10-Inch-Car-Subwoofer/QUANTUM-AUDIO-10-2000-WATT-CAR-SUBWOOFER-1000w-RMS-SUB/Q10D4SPL.aspx