We just bought some for my husband and after checking lots out we found:
That we got a better deal for an individual policy than through his work.
That Genworth has the longest history of providing it and let's you pay individual caregivers, without them having be hired through an agency, and doesn't show signs of trying to get out of the business, like many are.
None would take me due to medical reasons, so we will use savings for me. Check and see if your state participates in the "partnership" program. It takes too long to explain here, but is worth reading up on.