Mickey, good to hear from you again. The power capabilities of all three units you mention are essentially identical at about 140 watts into 8 ohms(and not appreciably different from your 3805). As to reliability, problems occasionally crop up with all manufacturers, but Onkyo hasn't been unusual in this regard recently and its receivers are comparable to other quality units.
So, in my view neither power nor reliability should be significant determining factors in your decision. Go with the new features that you're looking for at the best price. In particular note that the 4311 and 3009 have the highest grade Audyssey MultEQ XT32 for auto calibration and room equalization, which can make for a significant improvement. My suggestion would be to pick between those two based possibly on other features you want, or the price available to you.
