Tracking Herald and drop rates

OK, this is nowhere near statistically valid, but perhaps with enough group data we can get a feel for things. Today, I decided to leave a game running, and clear every TZ as they rotated. Started with Worldstone Keep (ran it 4 times), then left the game running until the

Cathedral (ran it 4 times).

Tracking the TZ, and whether or not a

Herald was triggered, I got:

WSK

Herald 1

Blood Moor (no

Herald)
Canyon of Magi

Herald 2 and 3
Cow level (no

Herald)

Barracks

Herald 4

Cold Plains

Herald 5

Rocky Waste (no

Herald)

Lower Kurast

Herald 6

Burial Grounds (no

Herald)
Durance of Hate (no

Herald)

Black Marsh (no

Herald)

Frozen Tundra (no

Herald)

Cathedral

Herald 7

So 3 tier 5 heralds, over the course of about 7 hours .Obviously just playing a few minutes here and there to clear the TZ then wait, except the start and end when I ran the TZ as normal, except doing full clear from the waypoint. As expected, the

Canyon of the Magi is almost certainly the best TZ for farming heralds, due to how many different areas it has, and how many boss groups. Though it does take a while to clear all the temples. Also, playing with Mana Burn as the permanent suffix gets annoying when your characters main bottleneck is mana to start with.

In terms of interesting/ orange item drops, I got one

Southern Worldstone Shard. No sunder charms, no statues, but that is to be expected given the drop rates are low. The only end of act boss I didn’t kill was Diablo. Andy dropped an essence, but she is always giving them up. Didn’t track how many boss/ champion kills that was, but quite a few, those shards don’t come easy. The heralds didn’t drop anything interesting, they don’t seem to have any meaningful better drops than normal boss/ champions in TZ from the 20 odd I have killed so far. What I can say is that

Herald 7 didnt seem any tougher, I think the difficulty caps at tier 5.

Anyway, how often are you managing to trigger Heralds?