Personally – the Solo 3. I care a lot about flavor, and I find the Lobo flavor to be pretty muted (but still much better than the Vane). But it is quite a bit bigger than the Lobo, it's not really pocketable. There are a lot of trade-offs for all of these vapes, they each have their own strong suits, and that's part of why it's hard to recommend a vape outright. You say your primary use case is right before bed, so I would definitely keep that in mind. If pocketable isn't actually super important to you, then maybe the Solo 3 is the way to go for you. I do think the Lobo is probably the easiest to recommend as an all-around workhorse you can take anywhere with you, especially to people who are inexperienced.
That said, the Lobo is considered a mid-tier vape, whereas the Solo 3 is closer to the high-end, although still not at the peak (some would say it is at the peak, that comes down to a matter of opinion). If you broke down vapes into five categories, it would probably be:
Cheap and Bad
Budget but Good
Mid-tier
High-end
Ultra Premium
I think most people would agree that the Vane fits in Cheap and Bad, whereas the Lobo sits in Mid-tier, and the Solo 3 sits in High-end.