I run a pretty similar setup, but could never get z-push to work properly with iOS exchange sync. I spent a few days tinkering with it and trying to fix php bug

I run a pretty similar setup, but could never get z-push to work properly with iOS exchange sync. I spent a few days tinkering with it and trying to fix php bugs, but to this day I can't get search to work properly from my iPhone. Are there any alternatives to z-push out there, or has someone had success with this setup?