Whats better? A new good or alright amp like MTX, Soundstream, Lanzar, Hifonics or a high end refurbished amp like Xtant,MMATS, US amps, etc. Cus I see these high end refurbished amps for the same price as the good or alright brand new amps. Are refurbs bullshit? I have 2 12" Type R's and I want...