My adventures in arguing with the wife over speakers and subwoofers may be coming to an end. If all goes well I will shortly be purchasing 3 Kef KHT9000ACE speakers for my fronts. To go with them I may also be allowed to purchase a sub in either the form of a Kef PSW4000 or a B&W ASW750. Both are the same price and seem like good performers. However, the PSW4000 has a 12" driver with a 500 watt amp while the ASW750 has a 12" driver coupled with a huge 1000 watt amp. Has anyone compared the two side by side and would my instincts serve me right in suggesting that the B&W would be a better sub?