EPEVER MPPT 30A Solar Charge Controller Regulator 12v 24v

so I’m an amatuer finding his way into creating an off grid installation to provide around 25% of my total home energy usage, I first tried the Renogy Rover equivalent to the Epever40 amp charge controller, and was never happy with it from the very start from installation to use I had no confidence in that units ability to do as claimed, the epever however was a completely different story, easy to install and work with, still has a rubbish manual but then I’ve not seen a decent manual for any electrical device for many years now, they all seem to tell you what to do but not how to do it these days, because I’m learning all this stuff from scratch my 24 volt installation contains a lot of monitoring stations between every process from PV’s through to and after inverter so I can see exactly what is happening with any applied energy (voltage drops, current flows and any reaction to changes of loads and energy supply) the Rover unit seemed slow to react to anything often sitting there trickiling 1.5 watts of energy into half discharged 200ah batteries despite the fact I knew there was at least 200 watts of energy on tap from the PV’s available (very frustrating) while the epever filled me with confidence as it seems to know exactly what to do with the available energy at any time and immidiately, if its there it gets used reacting to any changes of loading either applied to load outputs or off the batteries, likewise if the batteries arnt fully charged the epever puts as much as the batteries will accept into them, if at 7am at day break my 200ah of storage is 50% discharged by midday the epever has charged them to 100% even on a cloudy day, on a sunny day if I demand more power via a load then the epever makes sure I get it if the PV’s are willing, the Renogy would still be muling it over after the sun has gone down, I have only 1 complaint about the epever hence the missing 5th star, why am I forced to buy another device and / or download apps that I may or may not get to work so that I have full control over it? is that some kind of scam to squeeze more money out of their customers? because I’ve never come across any other product type where I have to buy more devices to control the device I have already paid for, there is no other logical reason for it but seems to be a trend not only for epever’s charge controllers but others to including other devices used for home solar stations, even victron do it for their equipment, but no excuse I’m still dropping a star for it as all the features epever advertise this charge controller to have are simply not true unless you spend more money on more equipment, this costs more than the Renogy Rover but worth every single penny, for starters it actually works and reacts to changes rather than spend ages debating with itself what the next move is, the MT50 add on is a must have to get the best out of this charge controller so include that as part of its cost so you know what it costs for a working albeit good charge controller, only other very minor gripe is the terminals could be bigger on the 40 amp unit for those that want to use over sized cables for added safety and less resistance in their wiring, but otherwise its a good solid charge controller that works well and gives you the confidence that when you walk away from it it will continue to do its thing safely and properly