I'd take my time. 'Friges have loads of features now and lots of new players -- Samsung, LG, etc.
We have two Sub-Zeros no one has touched in 15 years. Knock on wood.
My daughter just bought one. I'll find out what brand. Something with the shelves physically broke and the cooling went out the first week. The serviceman laughed and told them, "Nobody builds these things to last for 20 years any more."
Which reminds me, if you know a service guy you trust, they are excellent sources on these kinds of purchases.