Brands that have the least depreciation


Which high end brands have the best resale values? 
goldenear1948
Why worry about marques that have the least depreciation when you can have marques that have actually appreciated, Western Electric, Acrosound, Brook, etc.?
Definately B&W Loudspeakers,AR,Classe,Mark Levinson,Perreaux ,Klipsch, & Magnepan just to name a few . I would not touch McIntosh, Wilson, or ayre with a 10 foot pole. This is just my opinion.
I'll mention two not said so far... Wilson Speakers and conrad-johnson electronics.  I've had good resale and trade in experience with both.
Without a doubt McIntosh,a few of the ultra high wattage are even bringing 75 % of retail purchase price under 2 years old .