If you have a small budget, the ZenFone 5Z is a good alternative to ZenFone 5 and can be an exciting competitor for OnePlus 6, the two devices being quite similar in terms of performance and capabilities. What ASUS has to solve now is the software that still does not offer the same experience as the major competitors in the market like Samsung and Huawei, nor is it as simple to use as the "pure" Android.