Mike Dorning is all sunshine and rainbows:

While jobs have been slow to return, the country has experienced "an incredible productivity boom" that strengthens the economy for an expansion, says Greenhaus of Miller Tabak. Labor productivity, or worker output per hour, grew at a 6.9% annual pace in the fourth quarter, capping the biggest one-year gain since 2002. Over the long run, productivity growth is what raises living standards. Corporate profits also have been rising, up 8% in the fourth quarter, putting businesses on a sounder financial foundation to invest and hire as customers return.

Drum sees storm clouds on the horizon.

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