Surface conduit:

Advantages: Easier to install in existing structures. Potentially DIY friendly.

Disadvantages: Expensive/proprietary products, may be considered unsightly, potentially subject to physical damage.

Concealed conduit:

Advantages: Lower material cost, completely hidden installation. Protected from physical damage. Standardized materials, widely available.

Disadvantages: Requires opening walls/floors/ceilings in existing structures for access. Potentially higher installation labor costs. Less DIY friendly.