I started "doing mobile" this month too :D
NativeScript sounds interesting, it's nice that they have a XML approach, but I found the React-Native approach nicer, because they re-implemented much of the things I'm used to from the Web.
Also, I have to admit, Telerik feels a bit like the standard dev tools company from back in the days, like Sencha or Atlassian and I didn't really get on with such. Somehow the whole "Facebook does it's big services and releases cool dev tools as OSS" is more my thing.
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