Which is the best trust to protect my assets from being compromised by a long term care facility for payment of care?

Any trust which under any circumstance could benefit you is countable in determining eligibility for Medicaid.  Unlike Medicare and Social Security, Medicaid does not have a trust fund paid into by paycheck deductions.  It is funded from the general tax revenues.  That is why the Medicaid eligibility rules are so strict:  it is unfair to let your neighbor set aside funds in a trust for his children and turn to you for support.