The Sub zero fridge..just get a cheaper one. The only time you get real increased preformance from a fridge is when you have a commerical one like in the kitchens I work in. Those fridges also suck HUGE power and are cold enough to keep large amounts of food cold in a hot as hell kitchen. I suggest you just get a GE or other reliable brand for your house unless you have so much $$$ it just does not matter.
On a better stove, IF the burners produce heat like the big heavy ranges that are in professional kitchens, AND you like to cook that much, it is worth it.
ONE burner on one of our professional stoves in the kitchens I work in is most likely hotter than all four together on a home range(professional burners run 18,000-20,000 BTUs if they are running correctly. Heck..we have a "sun" burner that runs at 35,000 BTU!).
The higher heat allows for much better browning, sauteing, etc and faster cooking times overall. It is a bit much at first, but once you learn to handle the higher heat, you will have superior results on your table.
Look around for sales and people selling used ones that were not cooked on much..you can find great deals.