@ffs ofc I agree vizier is the least dangerous and not worth gearing around. But saying his attacks are cute is gonna get a response from me haha. I had that one-shot death (with 2400 hp and shako) when I was at 97.98, so that's a sore spot. They can randomly crit you for a load of dmg, and even more so if it was might instead of fana, or god forbid, both of them. Defensively, compared to hdin, sorc feels like a toddler in CS.
I played holy freeze no delirium on my twinked sorc that i mentioned. And when I say twinked sorc, she had the same level of gear as my untwinked one unfortunately, except more skillers. Just trying to make it clear it wasn't my 99er sorc. Those runs are much more stressful and I would expect I'd die about every 500-1000 runs doing that, whereas I died about once every 2k runs on the deli merc.
And ofc there's the qol/stress level I mentioned, but you're totally right that is just a matter of preference. I just see people trying out sorc CS runs in this thread and elsewhere and having a very tough time. I had the same experience, and delirium merc made the runs go from seemingly unsustainable to approachable. And again, I don't say the same for hdin. I don't see why people run delirium on hdin myself.
It's absolutely true that dragging the monsters through your blizzard is extremely desirable and delirium interferes with that. But I don't know what to say other than its easy to die as sorc in CS. ResTTe is saying normal mobs aren't that dangerous, but I know he has a decent handful of deaths in chaos so far

. I do wonder if stormshield sorc, no-delirium merc could potentially outperform spirit + deli merc. I assume it would be significantly safer, and you don't have the herding interference, just for the the cost of 2 skills.
@ResTTe haha yeah I didn't really think you were gonna switch to liking sorc the most. Mostly just playing around. I love that you're a barbarian through and through

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EDIT:
@ffs really you said it all with this "If you don't need it for safety, I'm not sure Delirium is ideal tbh. While I know many swear by it, personally I'm not a big fan because it stops monsters from running towards you (and into your Blizzard). So it makes runs a bit slower. I must admit I didn't hang much in CS with an untwinked Sorc so I don't know if that kind of safety is needed."
I guess the only thing we're debating is whether the safety is needed, and in my opinion that can be determined pretty easy by how often you die while using the delirium merc.
Sorry I keep adding things to my post, but maybe restte can run the first half of the level with delrium and second half without and tell us which half takes longer. Now that would be fun to see.