LPT: Considering a significant purchase? Call their customer warranty department pretending you need a repair. You'll see how they treat their customers after the sale.

I've done this countless times for appliances, computers, etc and it's amazing how some companies respond right away and others go into a black hole where no one calls back.

I also email to see how long it takes for them to respond to email requests.

If I have a good experience I let the csr and the person I'm buying from know that their service team is the reason I bought.