Minimising fridge noise

If the noise is caused by vibration against floor and sides of cupboard you could try sticking foam tape to side to reduce noise and dense foam to the feet [an old mouse mat chopped up is ok for this]
 
Many webites include noise levels in decibels in the spec. If not just google the model number along with "noise db" and you should get a match.

ZRG614SW shows at 38 db.

Higher number is louder. Whether that takes into account the clunk and not just the hum, I don't know though but you can at least compare difference models.
 
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