Well, I got the little XC 15-45mm lens as a starter lens for the X-T1 body I bought from a fellow TPer. It was £100 and I had a CEX voucher, so super cheap. But ... it's not at all bad. Far better than the Sony 16-50 I used with the A6500. And even with its limited OIS spec, I got a couple of decent 1-second handheld night shots.
Its OKness complicates my choice of 'decent' zoom lens though. From the tests at Lenstip, the significant step up is the XF16-50/2.8. But that doesn't have OIS. The XF16-80 does have OIS, but doesn't test very well (AFAICS). The 18-135 was my favourite general lens for the Sony, but there aren't so many reviews of that yet.