Steel systems
Steel piers can be driven to deeper bearing conditions depending on design and soil conditions.
Concrete systems
Pressed concrete systems use precast segments installed beneath the foundation and can be common in Texas repair work.
What matters more than material
Design load, installation method, support location, soil conditions, quality control, and the diagnosed problem all matter.
Ask for the rationale
A proposal should explain why the selected system fits the property rather than relying only on broad marketing claims.