My company spends $20,000 per month with thses two companies.

$15,000 at Home Depot and $5,000 at Lowes.

Home Depot has more locations close to where are work is.

Pricing and quality seem about the same.

Both could use more knowledgeable sales staff out on the floor.

I like lowe's better than home depot.  Lowes is more attuned to women than home depot.  Lowes has more seasonal things than home depot.  Knowledge of sales help is about the same, and with price matching there is no difference. Both are trying to become more green.  I do not think either more is gung ho into green building materials, they will when it means they make more money.  I have seen only a few green things, light bulbs, some insulation and water heaters.