Hmmm, I'm biased so if this post comes off as fanboi like....err it really is. After going thru the gyrations of setting up a new system from scratch, top to bottom...started with a full GHL stack w/Kh director. After 5million tech support tickets to Vinnie, watching endless tutorials and posting on GHL forums, decided to ditch the platform in whole because it sucks....really sucks. Sure, i'll get a reaction from someone in the GHL camp but its totally dated in many ways. Antiquated best describes the interface, SW and usability. Sometimes i don't want infinite flexibility that came with the GHL, i want preset, gonna cover 95% of my needs programming. My last Aquacontroller experience was with the Jr....starting to date myself a bit. It served its purpose in the mid 2000's to mid 2015'ish era. Nothing flashy but served its purpose. So, have to say, experience with three platforms. I decided to go all in with Hydros. Fast forward a year, this controller has been reliable, intuitive and cant think of using another platform moving forward. Setup consists of 2x X4's, 1x wave engine 12X outlets and a Alkatronic. Have to say, love having the crazy redundancy built in with the "collective", 2x system ph probes (4 total), 3x leak detection, double RO makeup water solenoids. The Alkatronic ties in seamlessly, allowing for control of the CO2 in the CaRx. The new XP8 really levels the playing field when looking at the big 3.