Which renter's insurance companies are OK?

[Chris B.]

As there is a variety of companies that offer renter's insurance, is there a list of good or preffered insurance companies?  I'm currently having a tougher than necessary time with one such company right now trying to collect a repair reimbursement.  If not a list, how do you decide which are acceptable are?  Maybe a government certification?  I'd considering the idea of limiting my tenants to only using gcompanies that are generally good.  Thanks!