I have owned the original Sophias and now Watt/Puppy 7's and both are terrific speakers. That being said, the WP7 is a better speaker IMO. Better bass and dynamics for the WP7 was no surprise. I wasn't prepared for the improvement in detail and soundstaging. The reason I ended up with the WP7 is that I was investigating whether it was worth upgrading my Sophias to Sophia II's. Wilson quoted $4K for the upgrade, the new tweeter and crossover, but the I cannot be upgraded to the slightly larger II cabinets. The dealer recommended going to the WP7 instead and he was right. However, you cannot go wrong with either.