That said, money alone is not the only consideration. Sometimes specific products perform so well that they break out of the mold. Because of all of these issues, don't consider this chart a bible for amplification selection in your home theater. There will always be exceptions to the rules laid out here. You might want to use the chart as a sounding board for potential choices you might need to make when designing or refitting your own home theater.
Speaker cables themselves can be a considerable expense.
Don't underestimate the value of speaker cables for fine home-theater sound. Better cables are easy to hear in every channel. The surround channels are less obvious than the other channels. If you have to economize somewhere, do it on the surround channels. Interconnects matter too and should also be selected carefully.