Yeah, the bottom freezer Sub Zeros seemed to have a lot of gas leaks. I had friends in Delaware that bought one and regretted it almost immediately. Kept a can of R12 under it to top the thing off when the ice cream got soft every 6 months. We seem to have a lot of all-fridge all-freezers in Phoenix, I have a pair in a rental and my neighbor had a pair until recently. Those seem to be ok, other than occasional defrost issues and general wear over 30 years or so. They're a pain in the butt to work on, though, since the guts are mounted under rather than over the cold box. Nice place to collect dust, dog hair and scorpions, and a complete nightmare to replace even a simple condenser fan... Neighbor replaced his 601's with a pair of glass-door bottom freezers. Even getting a steal on the first one, in the end, he spent almost $20,000. I might have half that much in my whole kitchen, including the range, DW, fridge, 18" ice machine, cabinets, sink, faucet and granite!