i have the choice of getting the dei 1100d or the viper d1200.1 for around 200 bucks each. ive been hearing good reviews on them and the bad ones were just out of spite. But, being in near delirioum i was wondering, being very concious on my budget, if the nakamichi amp would be worht the extra 100 dollars. it has the rating 800 watts rms @ ohms but i dont know if thats at 12 or 14V? how much do you think its underrated?