I love my bottom freezer -- DD has one too (different brand) and the icemaker was replaced 4 times under the service contract before it died completely (she got hers after I got mine). My fridge has only one door, my next one will probably have a split door on top, but definitely with a bottom freezer.
I have had a sleep number bed for about 12 years (in the guest room) and a select comfort (similar) for about 20. We have had to replace the motor on the select comfort, and the foam and one of the air mattress things over the years, but they never added up to the cost of a new bed. It has been about 10 years since we last replaced anything (knock on wood). DD got a sleep number -- she has bad arthritis in her hips and can't sleep on anything else.