BEST CLASSIC REFERGERATORS
Overall I would say that GE has built some of the best refrigerators 1920s- now much better overall than GM Frigidare. However GE did experience many bumps along the road in terms of early product failures. Starting in the mid 1950s GE had a bad compressor design that lasted till around 1964 where the compressors would loose capacity and have to be replaced. There automatic ice-maker was a disaster from 1968-1985 when they just copied WPs IM. And again in 1985 when they came out with an all new rotary compressor. These RC models were made from 1985-1991 and had the highest failure rate ever in refrigerator history, on larger models they failed in 2-7 years, however some of the smaller models actually lasted almost 10 years. After they recovered from this mess they again became quite good until around 2000 when they added a large computer board the the back of thier refs and a short lived defrost heater in thier SXSs to say nothing of the Artcia disaster and the LG inspired bottom freezers. We have been busy ever since.
But in-spite of all these problems GE always built a good quality box that was fixable and performed very well when working properly.
Frigidare on the other hand built some great refrigerators until the Frost Proof models started in the late 1950s-the late 1960s. Theses refs were often beautiful and worked well for 10-20 years but did not age well in many cases and are among the most difficult to get running correctly today. Frigidares IMs were also a disaster but very interesting designs.
Overall the best modern classics are the WP products from the early 1960s- today. In this period they produced few badly designed refrigerators and thier IMs and dispenser systems have always worked well with few major problems.
Going back to the old manual defrost refrigerators there were many good machines that have lasted to this day. Brands like Norge, Philco, Hotpoint [ although they shared all GEs problems from 1955 on], Kelvinator, Westinghouse, Gibson, old Coldspots built by Seeger Refrigerator Co., and many many others.