Is COBRA worth it after a layoff? - any advice?

I just got my COBRA paperwork and the deadline to decide is close. I saw that marketplace plans might cost less. Did anyone switch mid-year?

Check what the notice says about the election period and when coverage starts. Mine allowed a short window to choose.

Thanks for writing this out. I went through something close to it last year, and it got easier once I kept a simple log of every call and form.