I was actually asking which ones sold for more on the GTN.

The difference is a fix would probably involve a whole lot of testing, debugging, development, more testing and QA to resolve the issue. Changing how many credits are earned from a quest, could and probably is as easy as an update to a single field in a database. Maybe a Quest_Reward table. I support software myself and we try and keep little things like this ticking over.

Lord Kallig's mask. You get it as a Sith Inquistor anyway. Not sure about elsewhere. Whats the armor set at 1:09?

The aim of tanking is obviously to keep the attacks from enemies on you. You should generally open the attacking (Assassin's have a decent CC ability to which is handy for dealing with the weaker foes first) your DPS party members should attack the same target as you whilst you keep an eye on additional foes to make sure they don't attack your party members if they're hit by AOE's. It's easy to pick up but hard to master. A good tank can definitely make a party that much stronger.

Do you guys recommend buying the more expensive packs or just the cheapest. I'm a new sub that has already bought some of these packs (and opened unfortunately) and can't remember if it distinguishes what pack you have once you've bought it in your inventory.