As a home theater installer I have heard over 20 brands of inwalls. The best value that I have came across is Sonance, NHT, and SpeakerCraft. You will have to spend more for these than the "big name brands" (entry pairs start around $200) but you will not be disapointed with the quality. After all, if you put in bad inwalls it will be hard to replace them with a better brand if (which most likely they are) the holes are different sizes.

Brian