Just bought a kegerator so will be a while before I buy a tem0 control fridge. Might go for cube fermenter and do it in a bar fridge, hopefully I can pick up a freebie
Totally agree with all the posts.
I would however add that it's worth checking carefully the seals, on either standard fridge or chest freezer.
Frequently on working older fridges, the seals are knackered & can cost around $80 to get fixed. If you do nothing your power cost will go through the roof.
Also: ref. "lifting fermenters in and out hurts my back" - I still don't have a solution for this problem!!!
The seals are a LOT less of an issue with keezers as cool air is denser than warm air so it will have a tedency to stay in the bottom of the keezer. Thats why They make the best keg fridges but as stated in other posts introduce a manual handling nightmare for fermenters.
Also the nature of fermenting also means you are using the refrigeration function far less than with a keezer/kegerator. This means any factor that leads to inefficiency is negated somewhat.