My brother referred to Lowe's as the Sears of home improvement. He calls Home Depot the Walmart of home improvement. I kinda agree with him. Lowe's has some nicer items and also some good deals on items similar to HD.
I found some really nice lights for my new home that HD didn't have anything similar in quality. I really like their tool selection due to the quality. Also the garden section is pretty nice and they have some unique fruit tress that HD does not carry.
One thing I have noted is light bulbs specifically LED are allot more expensive at Lowe's. I don't hold that against them as I go to Lowe's for the things HD doesn't carry or for a higher quality item for my house.
The employees are helpful but the customer service lacks in comparison to HD. They are sometimes hard to find. If help is needed for tech advice your better off going to HD.