Since you've got the PS3 and already have assembled a blu ray collection I would say YES. You'll be able to take advantage of HD audio with the 606 plus it has other nice features also. The 800s included receiver is the same as the 505 and it's a nice receiver but being able to take advantage of HD audio especially when you have everything else is well worth the upgrade to me. You can always sell current receiver to recoup some of the cost. And btw, great prices you've found on both the 800 system and the 606.
Since you've got the PS3 and already have assembled a blu ray collection I would say YES. You'll be able to take advantage of HD audio with the 606 plus it has other nice features also. The 800s included receiver is the same as the 505 and it's a nice receiver but being able to take advantage of HD audio especially when you have everything else is well worth the upgrade to me. You can always sell current receiver to recoup some of the cost. And btw, great prices you've found on both the 800 system and the 606.