The big guys may not offer the customization you get from a local craftsman, but factory-made-to-order cabinets have the following benefits:
- Warranties of up to 25 years on cabinets, accessories, workmanship, and internal hardware.
- Controlled environment that yields more stable wood, which reduces warping and splitting later.
- Computerized cutting tools that offer more precise joinery than anything done by hand.
- Baked-on finishes that are more durable than local guys' air-dried ones. Dust-free finishing rooms also provide a smooth-as-glass surface.
Source material from http://www.thisoldhouse.com