Large flat panels, tall doors and wardrobe fronts, book-matched grain running across a whole run of cabinetry — and anywhere seasonal movement would fight a solid panel.
Real-wood veneer over a stable substrate is an engineering decision, not a downgrade. On a wide door, solid timber is the worse build: it cups, it twists, and eventually it stops closing. A veneered door with a proper edge stays flat for decades and lets the grain read across the whole elevation.
What matters is what the veneer is: real sliced timber, thick enough to sand lightly, laid over a substrate chosen for stability.