Originally Posted by
Djoron
You have 2 honor set, one with set boni, one without them. Both can be bought for honor or dropped from boxes.
Usually you'll want to get 4 set items and one off-set one with the best stat exchange.
As for conquest there are 3 sets.
The two above with higher stats and another off-set set that require Ashran rep and (generally) has versatility on all items.
Those can only be bought for conq, the other 2 can be bought w/o rep and can be dropped.
So with conquest gear you might be able to optimise that one off-set piece more, but it also makes gear decisions even weirder, as you might want to replace a totally different set piece once you get conquest gear than you would with only the 2 honor sets.