If your in tacvi and already farming some of the mpg trials I'd assume that if you put any effort into it you'll beat what ever remaining trials you have and get into anguish soon. Tacvi gear isn't bad but there isn't really anything I'm interested in from there personally altho I can see it depending on where you stand so to speak in your loot system. Pretty much everything in tacvi is either old focus's that cap at lvl 67/68 or not the max focus capped at lvl 70. 15 or 18% mana pres instead of 20%, 25% spell extension instead of 30% etc. Same for the focus's from the MPG trials.
Personally I' rather have
http://lucy.allakhazam.com/item.html?id=47284 for detrimental spell extension than the bracer for example. Assuming you do get into anguish you can probably safely assume, hanvar, keldovan and ture will die soon after. Since all 3 on average drop 1 non bp/legs armor peice it seems to be relatively common. I'd also go with ritualchanter's boots
http://lucy.allakhazam.com/item.html?id=70920 for bene spell extension eventually and gloves
http://lucy.allakhazam.com/item.html?id=70919 for heal focus.
If you are lower on the totem pole and can get so tacvi peice with out paying much or with out alot of competition they aren't bad peices but I just feel compared to alot of what you should have access to in anguish soon they aren't the best choice if you have th choice.