Ditto the positive opinions expressed in this thread! I am one of those overly analytical guys that spends way too much time researching and demo'ing potential purchases (esp big ticket items) and after listening to many different speakers (in my budget) and reading all the reviews, I gladfully settled on the 9.1's with the 3.1 II center and 2 pair of CI-6.1 in-ceiling surrounds. Phase Tech is the innovator, not the follower, in speaker technology and several other companies have utilized their design in their products. While they aren't a mass marketed outfit, they deliver where it counts....in the sound (for both HT and music)! If you haven't read jaxvon's review, I suggest you check it out as he does a good job running the PC's through the paces.
As for receiver, you may want to wait on the Yammie 2600 due to its "bang for the buck". I have listened to the Phase Techs with the 4600 and they sound great. But, as others have warned, the 9.1's may need an external amp to realize there full potential.
Also, in regards to price, if you don't mind negotiating, you can probably get up to 25% off list for the PC's if you try.