I was referring to the free ship that subscribers get owl, but yes that would include rented ships. Personally on my sabre i tend to run 4x Panther Repeaters, although i also tested the Mantis's recently and they are kinda fun and seem to kill ships quicker, but really short ranged. I have also tried the 4x S3 tarantula's, but find i dislike slow fire rates on faster ships.
Now if you want to go overboard and have fun, 4x Combines on the Connie is just a little bit of overkill. (I still have all four mounted on mine, with my 5th combine on my hornet xD).
If you go the way of the hornet, grab a flashfire mount and get your hands on a combine and either 3 m5a's or 3 panthers (for a fixed setup). the M6A's and the combine have the exact same fire rate, so i tried combining the M5A's with the combine on the hornet, and its almost the same fire rate, but the M5A's seem to be slightly faster. However with the 3x Panthers you can saturate the target and overload the shields, and anytime you get a good shot with the combine fire a few rounds of HE into them and it ruins peoples days. If you prefer faster fire rates, the revenant isnt a bad gun but overheats quickly, pair that with the 3x Panthers or 3x Mantis's and you can still ruins peoples days, just with less explosions (boring!) Also, if you have a connie already, the M6A also fits on the flashfire mount for the hornet