Appliances for rentals

[Jacob Bindler]

I have 20 tenants in 7 buildings/condos in NYC area and am looking to streamline my appliance acquisition/purchase strategy. These things tend to break from time to time and I was wondering if people here have developed approaches to two things: 

• What is the best way/place to buy the appliances (HD, Costco, BestBuy...) were i can return/replace them with the least amount of hustle, and
•  Your approach to repairing vs replacing vs buying warranties.

 thanks a lot.