dust collectors - reliability

Are dust collector motors generally reliable? Delta's DCs? ToolKing has a refurbished Delta AP400 for $159. $189 for a new one. Refurbished has 6 month warranty; new one gets 2 years. It's always a crap shoot, but I'd like advice - is it worth $30 to get an extra 18 months of warranty?
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Dominic Palazzola
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