Grade 5 UT missions, I still have one on the Shaltin Tunnels, same mission level range as the item level. Not 100% sure which mission type I ran, most likely for luxury fabrics and/or companion gifts, leaning towards the gifts. I think it doesn't matter which you try though, and from my experience you get a lot of armormech schems from the fabrics, and companion gifts feel the best overall to me, but you may feel different on those odds.
Hope that helps.
i've noticed that it doesn't really matter which UT missions you run when it crits it'll give you something at random, Has anyone else here experienced a "double crit" I did a UT mission for metals and critted mandalorion iron, and a schematic.