I was never a fan of Himes and with the spawn rate at Ulu Estate 2, I won't be surprised if Ulu Estate 2 comes out on top.
For me (ranger, 95-116) Himes is better if you're outdamaging the priest, ulu is better if you're not. If you're outdamaging the priest, they'll get bad exp and won't want to go. The drops are better at Ulu II.
Yeah I just got on and was coming here to post this - I haven't timed it yet, but I'm reasonably certain the new Ulu II is about half the speed of himes.
Actually, I just tested this on my Bishop that can One Shot both Himes and Ulu Estate 2 and the XP was more in favor for Ulu Estate 2. I don't know how well this will correspond with Ice/Lightning Mages, but it's something to consider. At 160, I got around 24%/Hour at Ulu Estate 2 At 161, I got around 18%/Hour at Himes