What width? 36"? 42"? 48"?

What configuration? Side by side? Single door? French Door? Side by sides tend to have the most cubic feet for a counterdepth fridge, but they are narrow in the 36" size. Bottom freezer fridges will have less cu. ft. than a side-by-side, but more easily-used wider space.

Also, you could do one all-fridge column and one all-freezer column for the most cu. ft. in a counterdepth fridge. How much room are you planning for a fridge?

Make your counters 29" deep.
You get more beautiful counters.
You get a reasonable fridge at a reasonable price.
It's a win win.