When to Take the Money in a Class-Action Settlement (and When Not To)

In the Thinx settlement, you can also object, exclude yourself, or do nothing—all with different consequences
The class actin settlement du jour is from the Thinx period underwear company, having to do with allegations that the menstrual products contain harmful chemicals that potentially cause fertility issues or cancer. While Thinx denies these allegations, they are providing the following options for people who submit a claim before mid-April: take a cash reimbursement for $7 per pair for up to three pairs; get 35% off a single purchase up to $150; object; exclude yourself from the settlement; or do nothing.
Thinx is not the only settlement available right now, and each one offers different options and caveats. So, how do decide when a settlement is a good deal—or when you should hold out in case you want to bring action later?
When to Take the Money in a Class-Action Settlement (and When Not To)