I've had a few different brands of woofers, I currently own two 12" re audio sxx d4 subs 2000wmax/1000wrms. I love them but I wanted a new project so I'm selling them. I'm looking for some good 600 Watt rms subs. I've messed with sundown sa 12 and they were nice but I'd like to check out something different. I was curious about skar audio vvx 12 d4 and massive audio kilo 12 d4 and of course any other suggestions.