The microwave that came with our house (also a GE Space Saver), died after roughly 15 years of heavy use.  We purchased a newer model in the GE Space Saver line.  The difference is night and day.  Easy to install (being the same model family, we were able to reuse the hanging bracket and bolts).  It has powerful lighting in one area with a broad spread rather than the 2 lights in 2 locations on the bottom.  Ventilation over the stove works wonderfully and being that the vents are on top, air will not blow in our faces as we cook.  The turn table can be turned on/off (so we will not have to remove the turn table when needed).  I love that there is a sensor to notify us when we need to replace/clean filters.  The clock read out is bolder and we did not have to mess with AM/PM setting (the previous model had AM/PM which was dwarfed and not legible).  It is quieter than the previous model and it heats food/liquid beautifully.  We are very pleased.