Wanted to pick up a 16-55, but saw a 10-24 used, locally, so that was my first lens purchase for a newly acquired X-T1. I'm pretty happy with it so far!
I shoot a lot of street and some landscape. I've had it for less than a week and haven't used it for street yet, but I did shoot some landscapes:
I also picked up a 18-55 for a steal, but don't have it yet. The 50-140 and 56mm are next on my list. I'd be a happy camper with those.
As an aside, I have also tried a Leica Summilux 50mm, Summarits (35/75mm) and they all work pretty well. The 50 Summilux is holding me back from the 56mm purchase as the IQ is very nice, but I'm not convinced I want to manually focus anything on the X-T1...