I did a search for qolsys and found a few hits but nothing conclusive.  Does anyone have any experience with this alarm system?  My alarm guy wants to replace my antiquated system with this qolsys iq4 system.  
 

Is the elk better?  Isn’t it fully integrated with a Node Server? Should I ask him if he can do that?  

 

I appreciate any comments. 

@someguy To the best of my knowledge there are two NS available that allow integration between UD products and alarm panels. Elk is one and the other is DSC. The Elk integration is handled by the very extensive Elk Polyglot NS that is actively maintained. The DSC integration is managed by the Envisalink-DSC NS which is also actively maintained.

Elk is easier to program and offers extensive customization's that are not available with DSC, but most of those functions are duplicated and easier to manage on the ISY / Polysi / eisy anyway. For reliability I have to give a slight advantage to Elk, but they are both solid systems.