Vivitek DU4371Z-ST anybody using one of these projectors

[Kmurray]

Does anyone have any experience of the Vivitek DU4371Z-ST projector. It's a native 16.10 WUXGA with what appears to be decent spec at reasonable price.
5100 lumens and 0.5 throw ratio, looks like it could suit my installation but would love to hear from anyone actually using one.

[vrpunk]

NO, I usually go with Benq or Optima, but I like Vivitek room calculator!

https://vivitek-distance-calculator.github.io/

Good Luck