Steve, it would depend on what features you're looking to update in a new receiver. The 2311 is a fine unit if it has what you're actually looking for.
It should be pointed out that while "0" may be a good reference point not to be generally exceeded, it does depend, as Bruno mentioned, on the voltage input level from the source material. For example, a very low level recording might use only a tenth of the power at "0" that some pop item mastered at(or even slightly above)the digital max uses. The key point is the actual sound level which we should be careful not to exceed, both for the sake of the equipment and more importantly, our hearing. Volume above about 100dB, even on brief peaks, should rarely be used in home settings. Fortunately, very few listeners employ the "reference" level on movies(max of 105dB)at home for their listening.
