At the moment, I’m using plain old Bootstrap, since this turned out the most reliable framework. I’m also “cherrypicking” some elements form Materialize and Semantic UI, by including only certain elements of these frameworks via SASS includes. This mix is not certainly not ideal, and my first plan was to use Materialize throughout. However, it turned out that Materialize is not really well-designed under the hood. You run into situations where certain combinations of elements just don’t fit together well. I’ve never had such kind of quirks with Bootstrap, so I returned to it. Pure Semantic UI might also be an option, but I found this framework too late to change everything again.
I just stumbled upon Framework 7 recently, since some guy posted it here. He already had integrated it with Meteor and was quite happy with it. However, when I downloaded some of the demo apps from the app store, I noticed some quirks as well (like views only updated the second time you tapped on them). I can just guess this has something to do with Framework 7’s own implementation of page element fetching. But I’m not sure, I did not invest more time, since the demo apps did not convince me. Although it looked quite promising, I have to admit.