Should I buy a 10-inch or 12-inch corded miter saw?

Across the reviewers we read, the consensus is that 10-inch saws are lighter, cheaper to re-blade, and more than enough for trim, furniture parts and most 2x material. 12-inch saws are the pick if you regularly crosscut wider stock (nominal 2x8 and up at 90°) or cut tall baseboard vertically against the fence. Specialist-community threads repeatedly note that a 12-inch slider's extra capacity comes with significantly more weight and footprint.