When the Lowe's first opened here in 2000, Home Depot kicked their asses for quality of customer service. It seemed like Lowe's hired the folks that couldn't cut it at Home Depot. Home Depot had far better selection and quality too.
Fast forward 5 years and Home Depot started firing all its long-term employees who made too much money...but actually knew stuff.

Many of them went to Lowe's.
Nowadays, Lowe's beats HD hands down on customer service and the knowledge of their people. Overall, prices are about the same, and they both price match each other +10%, so I play them off each other all the time.
Home Depot is significantly closer, (less than 1 mile-Lowe's about 4 miles) but I still prefer Lowe's to HD for most things...especially in the garden department. I did buy my new Honda lawnmower from HD...because Lowe's didn't carry the Honda brand. PLUS, I used a 15% Orchard Supply Hardware coupon.
We used ONLY Behr interior paint when we bought this house in 1999. IIRC, we bought about 25 gallons to paint all the rooms and ceiling. GOOD paint.