Not sure if its the marketing or the fact that apex is already well established enjoying the benefits of the fan base - both marketing support as well as technical support. It was able to establish itself without much competition. Then there was the anti-competitive mess when Hydros arrived but that's a story for another day. Nobody knows how many times this tactic was used in the past with other up and coming controllers.
GHL's hardware while very solid has very poor and cumbersome software. I attempted to switch (even bypassing my requirement for Ethernet) but the controller would need multiple restarts while simply sitting on my workbench, loss of connectivity was always the issue. I just couldn't trust it. The UI on the web was designed around the time windows 3.1 came out.
Looked into hydros recently, looks great but somebody forgot to add enough I/O ports to make it even remotely useful - for me. I could buy 3 apexes before I'd complete a Hydros with the extreme amount of NO/NC I needed for my project.
So I stuck to APEX, bought half a dozen used brains and fragmented different parts of the system between 4 controllers. Apex or not, redundancies are a must.
Why?