I am with the one large pantry.

Symmetry is overrated. I'd much rather have one large pantry.

I'm on the one big pantry side as well. Symmetry is overrated ;)

I vote for one larger pantry. How deep are these areas? Normal counter depth is 24." It's going to be difficult to reach to the back of a 15"x24" area, and the actual door opening may only be 12." A 30" wide pantry is just easier to get into. Also consider using an L-shaped shelving layout. This also makes it easier to get to smaller items while still having room for wider containers.

An alternative is to use pull out shelves to make it easier to get to those things in the back.

One large cabinet 30” carcass should be less expensive than two smaller ones and will have more useable horizontal space. Beyond that, you would be paying for twice as many doors and handles, twice as many rollouts and twice as many drawer glides. You likely will need a filler between fridge and adjoining cabinetry so fridge doors will open properly, especially for a French Door fridge.

In short I would get a cost quote for one large versus two small (including rollouts and glides). You should be able to easily adjust vertical spacing between rollouts without tools (narrow gaps for standard cans, more for oatmeal, even more for cereal and even more for bulk paper towels). Adjustable spacing allowed me to fit in an extra rollout. Virtually positive the one large pantry will cost much less.

Thank you!! I also want the one larger pantry. Symmetry is great but not at the expense of function.

"Now, where did I put the balsamic vinegar? Left pantry? No, not there. Right pantry? And which one has the mini penne pasta?" What an inefficient idea! Your kitchen designer knows nothing about usability. He/she may know some minimal design, but has no idea that kitchens are also work spaces.

One pantry. One place for everything. No guesswork.