Lemm.ee and Lemmy.zip are both quite large and active instances (with 3,000 and 500 active monthly users, respectively), where as .Cafe is still quite small, which would help spread the load better.
Appealing aspects:
Established and trusted instance with an active admin
Updates to the latest lemmy versions quickly
Defederated with only a handful of extreme instances, giving it excellent reach across the threadiverse
Participates in Lemmy-Federate, making it easier for a new community to get started
General use instance, making any community appropriate
I'm going to be moving a couple of my communities from Lemmy.World to .Cafe shortly, and the admin was more than happy to host them when I asked, so I imagine he'd feel the same about an Ask community. Something to consider at least. :)