I have for many years since I was around 19 & I'm erm 52 now have been a fan of 'Richer Sounds'. http://www.richersounds.com/ The people in his stores not only knowledgeable but also enthusiastic about goods they sell, they will offer cheaper goods if they feel it is in YOUR interest.
I first started using Richer for Hi-Fi but now they just about do about all AV. Their extended warranties are the best & cheapest this side of the Mississippi, & they are the one store I will recommended to anyone without having to worry about comebacks.
Obviously they are not perfect but perhaps as near as you can get - IMHO :-)