There are key factors you should consider when deciding between an LLC or a Corporation:
If you are looking for liability protection and flexibility (limited admin upkeep, tax flexibility) an LLC is a great choice for new businesses. LLCs are considered easier to maintain.
If you have investors/shareholders or you're raising or will need to raise capital, and plan to take a company public a C Corporation is a great choice. US investors require a C Corporation to invest venture capital.