Health Insurance Questions for a Married Couple (W2 + Independent Contractor)

My spouse and I are trying to figure out the best health insurance setup. My spouse is a W2 employee with access to an employer sponsored health plan, and I'm an independent contractor. For anyone in a similar situation, did you join your spouse's employer plan or get your own coverage? What factors helped you decide?

Also, for other independent contractors, any tips for finding good coverage without overpaying?

Thanks!