The Jax Z-1 is a well-made zoomie that is a cut above the run-of-the-mill Chinese lights.
In its original form (XM-L2) it did about 55-60 kcd.
Mine was modded by a fellow BLF’er and now does about 195kcd 
using an xp-g2 emitter. Overall a ‘good little zoomie’ if you don’t mind the price.