I have done extensive search in regard to this issue since my wife is currently on Cobra and she had cancer.
After Cobra, you are eligible for HIPAA (Health Insurance Portability and Accountability Act). This allows you to choose from 2 of your current insurance carrier most popular plans. They can not deny coverage even if you have an existing condition. However, since there is no limit on what they can charge for these plans, they can be very expensive. If you're over 50s, prepare to shell out about $1,200 to $1,500 for 2 peoples.
The state risk pools, if available, are very limited in and you may have to wait to get in. In California, there is a waiting period and they only cover a maximum of $75K lifetime limit and the monthly premium is as high as or even higher than HIPAA plans. The risk pools are good only for people who are rejected by the insurance industries.
I know it's sad for a country like ours to have such a terrible health care system. You can work and save all your life but if you lost your job and get sick then you're screwed. That is why 50 percent of personal bankruptcy are caused by medical problems.