So, again, what's the point? The cynical answer is that Door-in-Door is just an easy excuse for LG to charge more for its refrigerators. That might be good for LG, but it's not so good for consumers.
LG fridges have a pretty good track record in our test lab, and the LFXC24796D was no exception. Temperatures held steady throughout all of our tests, with the main body shelves and the left door shelves all coming in within 1.6 degrees Fahrenheit of the target temperature at the refrigerator's default setting. That's a great result.
There's a problem area, though, and it isn't tough to spot in that heat map above. It's the Door-in-Door shelves, all of which ran a couple of degrees warmer than the rest of the shelves throughout all of our tests. That holds true to what we've seen from other Door-in-Door compartments in LG refrigerators. Fridge for fridge, they always come in a little bit warm. It's somewhat forgivable since you'll probably use those shelves to store things like butter, beer and preservative-heavy condiments. Still, you'll want to keep your milk, cheeses and other temperature-sensitive groceries elsewhere.
One other quick note on that Door-in-Door compartment. Take a look at the trio of crisper bins. In each heat map, they show a clear trend towards warmer temperatures on the right half of the fridge, where the Door-in-Door compartment lives. That's clear evidence that the Door-in-Door compartment compromises performance in the rest of the refrigerator, too, at least to a small extent.
My other complaint with the refrigerator's performance is with that temperature-adjustable pantry drawer. During the default, 37-degree setting test, I dialed it down to the coldest setting ("Meat") to see if it could hold a colder temperature than the rest of the fridge. It only came in about a degree cooler than the refrigerator's main shelves, which was still warmer than the fridge's 37-degree setting. After that, I tested the refrigerator's coldest setting and dialed the drawer up to its warmest setting ("Produce") to see if it could keep things from getting too chilly. The drawer finished a few degrees warmer than the refrigerator's 33-degree setting -- but so did the rest of the fridge. In other words, those drawer settings aren't good for much more than labeling what you're putting inside.
If Door-in-Door is just an excuse for LG to charge more for its refrigerators, then InstaView is just an excuse for LG to charge more for Door-in-Door. Both have a "Well, would you look at that!" appeal, but neither offers much in the way of actual utility.
That's what sours me on these InstaView fridges. They look great and they perform decently well, but in the end, you're doubling down on expensive features that you don't actually need. Unless you're in love with the knock-to-see-inside InstaView feature, I say there are plenty of better ways to spend your money.
Updated 10:35 AM, 11/1/16: The price of this refrigerator has dropped from $4,399 to $4,299, and the text of this review has been updated accordingly. Our value assessment remains unchanged.