The RMS number is what you need to pay attention to because it is the realistic amount of wattage that the sub will handle on a normal playing basis. So the DC 102's will handle 150 watts each, or 300 for the pair. They will make some noise, but if the DCWS102's are not much more money, I would go with them for double the RMS power. At the end of the day though, sound and output is going to be defined based on box volume, ported or solid box, how the system is wired and the amp pushing the subs. Don't get hung up on just RMS numbers alone. All the details done right can make a smaller wattage system sound like a high end monster.
