Induction vs. Universal motor

Recently, Sears has been emphasizing that their lighter duty air compressors have universal motors. Is this a good thing? I've read that UMC motors allow extension cord use, provide higher startup torque and are lighter in weight. But, does all that come at the cost of long-term durability vs. an induction type motor?
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David
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DJA wrote:

Universal motors are loud and obnoxious, and the brushes need replacing occasionally. Their one good characteristic is they will run on DC power (got any 120V DC outlets?)
Bob
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Universal motors run fast, hot, and noisy. They need brushes replaced in time and after enough use the commutators were out. Only typically used on handheld tools where power/weight ratio or cost is the biggest factor. Or if you need to run off DC like old portable welder/generators provided.
I would never buy an air compressor with a universal motor, mainly since whatever it's connected to is almost certain to be junk.
GTO(John)
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This is Turtle.
Sear has on their cheap models of air compressors a very cheaply made compressor and the universial motor will probley out last the compressor anyway. I can see their point here in why puy a 30 year running life motor on a 10 year running life compressor. Just put a 10 year motor on a 10 year compressor and have everything matching up to last about 10 years.
TURTLE
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Good point Turtle , but it seems like cheap things these days dont even go the warranty period. Or they break 1 month later
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