Long power cable for subwoofer


I'm thinking about moving my SVS SB16s and require longer power cords, about 15 feet.  All I've found in the 10awg range were like 6ft or 2 meters. Even Monoprice doesn't have anything that's not 18awg or maybe 14awg.  Does this really matter?  I don't want to spend tons of $ on subwoofer power cables.
dtximages
Extension cord, totally. Subs are one of the rare cases where wire quality makes hardly any difference.
@dtximages

I swapped the oem REl power cord for a heavy duty audiophile grade cord and I heard no difference.

Check out showmecables.com they have power cords in a bizillon configurations up to 25ft. Hella cheap too!