A counter-depth fridge’s purpose is to sit flush and not protrude into a walkway, or impede an island, etc. The downside is the capacity, most won’t come in sizes larger than, say 23 cubic feet, so you sacrifice space but gain a look. Almost all new kitchen layouts use a counter depth as a standard cabinet is 24″ deep designed for this kind of product. If you need more space, you can consider cheating the layout by building the fridge further into the wall, so you get the best of both worlds. Standard depth fridges are around 28-30 deep, around 6″ deeper.