>>3267642the 16-50 kit lens doesn't get enough credit. Its actually pretty great until you start really shelling out the bucks. Plus you wont find a versatile lens as compact as that
the best "budget" zoom lens upgrade w would be the 18-105 or the newer 18-135 as mentioned previously.
a better bet would be to get a set of manual primes/ 3rd party sellers Neweer and Meike have a great set of budget primes for the E-mount and you can actually get a full set for under $400
https://www.youtube.com/watch?v=RNxTGQqZygYhttps://www.youtube.com/watch?v=nKmxDb_ELZQhttps://www.youtube.com/watch?v=TRt2mNFxdDI