I already know the pros and cons of each but how does the Z5 goes for reliability? Any Z5 owners care to chime in on usage/issues?

The prev AX100 were plagued with iris issues and the AX200 is probably too new for owners to report.

I need the brightness of the AX200 but if the Z5 has proven to be more reliable, then Im willing to sacrifice the brightness.

TIA
Frag