Trouble with Lowes is that their lumber selection sucks.
Homo Depot has a better selection of species of lumber like Douglas Fir and Fir Plywood.
Lowes only stocks Yellow Pine.
Wow... where in the country do you live? Down here in Florida, where pine reigns supreme, the quality of the Lowes lumber is much better than HD. Hands down.
If you are into lumber, you might try to find a small, locally owned lumber yard. Many times their prices are very competitive or less than either Lowes or Hd. And, many time they have a more varied selection.