Slicing is good in theory at the moment but through personal preference I went the Synth, underworld, and Archeology. From experience it gives you a good balance of items required for your gear for synthweaving. UT is great for gathering rare and elusive schematics as well as archeology gets you that too. So It really depends upon what you are looking for. Beefy defense, armortech, or decent defense with force power-ups synth weaving. this is solely my opinion and should not be taken as a preferential treatment towards one classes/crew skill set. It by no means that this is the best build its just the one i went with to get stronger gear for a decent pve/pvp guardian tank with an ability to deal decent damage at higher levels.
