No need to get anything more expensive for a number of reasons. First they are cheep at £15 and have all the functions / features needed. no point in spending 40 or 50 quid on something and finding it’s the actual fridge that’s broken, you can always by a more expensive one later.
also, these STC 1000s have a 10amp relay, to cope with any surge, they have a heating function, and are compatible with the basic NTC temp probe already installed in the fridge.
Just wire up as per my photos below - terminal block used as a temporary solution.