The ultimate question, as a polyglot and a "get it done easier and not regret it too much later" kind of person, is which is worth the plunge? I have a project right now to do, and I must commit.
Imagine the maintenance issues the developers that follow you will have if you do not pick the stack correctly.
For commercial projects, I would urge you to use something that is well-adopted React or Angular 2.
If the project is personal, then why not just have two smaller projects to utilize both tech stacks or even combine them. Nobody depends on you, and you have all the flexibility to play around and write the software as you please.
If you do end up playing with both, share your experience, and tell us which technology you prefer.
1. Stagnated feature set playing catch up to other boilerplates.
2. You will run into performance issues at 100 users.
3. Still no real SQL support. Instead they're going all in on Apollo (graphql).
4. Brain drain. Too many influential package maintainers have left Meteor entirely, including Arunoda.
Go with elixir and Phoenix - you won't think about performance until you get acquired lol
> Meteor isn't going to take over all JavaScript development the way Rails took over Ruby development, at least not anytime soon. That's just not how the JavaScript ecosystem works. However, I think it will be the #1 full stack JavaScript framework for a long time to come and will continue to be a really great option for teams that want to build JavaScript apps quickly, especially apps that have a realtime or collaborative element. [1]
[1] https://github.com/apollostack/apollo-client [2] http://absinthe-graphql.org/
You'd still need some frontend tech, but there's a good amount of integration tools out there already for things like Elm, React, probably Meteor, Angular etc.
In 24 months is everything your suggesting going to be replaced with something newer? The answer is maybe, and any guess is as good as any other.
Pick what you like, or think is going to make you happy, validate your choice and leave your self notes as to why. Come back to it later and see if you rational of today holds true in the future!