These are both sealed 10"s with moderate amplification.
Here is a review of the ASW610. None of these subs will be powerhouses. They are probably more similar than different. The ASW610 has a more powerful amp, so if that is what you have now, I would just stick with it. Assuming you are in Europe or England, I would save up for something from XTZ, the larger BK subs, or SVS.