Thanks! As to which brand...so many out there. But, get an amp that "doubles down." For example, 600W into 8, 1200W into 4, 2400W into 2.
You can't go wrong with these behemoths.
http://www.hometheaterhifi.com/power-amplifiers/1479-pass-labs-x10005-monoblock-power-amplifier.html