Would you contribute to a 401k/Roth IRA, or not?

[David Fernandez]

My wife's employer offers what seems a good retirement plant. If she contributes to her 401k/Roth IRA 3% of her basic salary, the employer will contribute the same 3%, plus an additional 1% of her basic pay. For example, let's say she makes $100,000. She will contribute annually $3,000 (3%) and the employer will contribute $4,000 (4%).

Would you take advantage of this plan or would you rather do something else (SIDRA, solo 401k, invest it directly without going through any retirement plan vehicle, etc.)?