How about none?
Okay, assuming that I've been cornered by demons, and they've got a nuke they're prepared to detonate over a city which is NOT New York (that city gets too much attention in action fiction) unless I take one, then we can look at actually choosing.
Not Ursiel. Saw what he does to hosts.
Not Magog.
Not Namshiel. Too many thorns. Sounds painful.
Not Lasciel. Tempting, but then, that's the point, right?
Not Anduriel. Survival rate with him would probably be good, but do I really want to hitch myself to the freaking commander of the 30? No thank you.
Not Deirde's coin. If that demon is anything like Deirde, that's a nopefish.
Not Imariel. Also a commander.
I'm thinking Saluriel. He's not too high level in the Order, but doesn't seem like he brutalizes his hosts into submission. Probably more of an offering of power type situation. He has had magical caster hosts before, and could possibly teach some of that.