Guys I'm really freaking out right now this sounds so good. Listening to a bunch of DTS 5.1 CDs I have and it sounds just extraordinary. So crisp, do beautiful and it's like perfectly balanced.
I cannot believe I have gone from should I replace my speakers which I have always loved to replace my new receiver to now everything sounds incredible just by rerunning Audyssey and doing it right. I'm beyond impressed.
Freaking out? Me too, but I have 5 subs (the front L/R are the big PC12U and PB13U) working with my Veritas 2.3i towers and center, powered by 3 ext power amps controlled by the x4400h that replaced my Marantz AVP. That's a lot of subs for a small 12x20x8 HT room, so there is no lack of smooth bass. I don't know how big your room is, but if your single PB1000 is doing such a great sub with your SM65 and SM55, then regardless of the room size, you must have done a mic perfect job the last time you ran Audyssey setup, good job!
As HD suggested, it may be a good idea to save/back up what you have now before re-running Audyssey so if things don't work out you can restore your mic perfect run. I used the Editor App so it is easy for me to do back up and retrieve. If you ran it directly on the AVR, the procedure may not be so straight forward, but if you run into problem I am sure HD can help you.