I don't know anything about the quality of GE Monogram vs other brands but we are looking at 48" integrated / panel ready frig models (there aren't a lot of them that we've found) and the quote we got for the Monogram was the same price for the most part as the quote we got for a Sub-Zero. Kitchen Aid makes one also, it was approximately $1500 or so less than Suz-Zero or Monogram (so still pretty pricey). The 48" side by side gave more frig space than the 24" columns.

I'm just finishing a kitchen renovation and went back and forth on whether to buy a 48" built in side by side SZ or the GE monogram with custom panels. Loved the sub zero but it had slightly less usable square inches in the freezer than the monogram and it was $1800 more expensive. Read all the problems with mold and cooling for GE and am still concerned, but went with it anyway (model ZiS480NX)because we needed the extra freezer space. The GE customer service reps, who were far and away the most helpful of any fridge manufacturer (throughout this process I talked to Jenn-Air, Kitchenaid, Thermador, SZ, etc), told me that many of the parts are now being manufactured in TN not China because of all the probs they have had. Don't know if that is true, but clearly I hope so. Will report back on the new fridge once I've had it awhile. BTW: my 16 year old GE profile side by side never needed one service call in 16 years and has always done a perfect job keeping foods fresh and at the right temps. All shelves and bins look like new.