I've been running my scout sentinels (two of them) with autocannons and hunter killer missiles. I usually outflank with them and try to nail some side armor. Since I usually squadron them, I've been considering dropping the HK missiles (emphasis on the 'miss-') and just sticking with the autocannons. Note that they are never expected to survive beyond 1-2 rounds.
What are you all running and how's it working for you? Any advice on my sentinels?