I guess it depends how fussy you are. I've had several fridges/freezers/ovens that don't actually maintain the set temperature. for ovens this is merely annoyin

I guess it depends how fussy you are. I've had several fridges/freezers/ovens that don't actually maintain the set temperature. for ovens this is merely annoying, but for fridges and especially freezers, this is a food safety issue. on fridges/freezers that have a dial instead of a digital temperature control, I've found that some just can't maintain a stable temperature, no matter how much I fiddle with them. after setting them "just right" with my own thermometer, I'll come back the next day to find an exploded bottle in my fridge or cold water in my ice tray. books work really well until a pipe bursts in your attic. then you wake up and notice half your collection has been ruined (personal experience).