At first I was glad I selected MasterVolt, as MasterVolt was nearby in Amsterdam.
Then I got an upgrade of my XS2200 to a soladin WEB1500, because the dB quote in the specs were certainly off by 20 dB. My neighbors could tell when the sun came up. And I lived near the train tracks, and those houses are extremely sound isolated. Still they could hear the sun rising.
The web1500 was promised to be much more quiet, which was true.
In less than 5 years after paying 250 euro extra for the WEB1500 indirectly from mastervolt for a deal with mastervolt to exchange the out-of-spec noisy xs2200 for a more silent web1500, mastervolt pulled the plug on the cloudservice where this web1500 was calling home.
They refused to made it offline available or fix anything that made the cloudservice not necessary
30 days later my inverter stopped.
This, and looking at for instance at how fritz/AVM tried to keep their stuff locked down and hunting everyone that showed how to fix the fritz, made me realize there are 2 sides:
Good electronics. And open source.
It took a few years investigating for my migration to a possible off-grid situation to get a clue of what I should be doing. Because I could probably hold mastervolt liable for the scam deal they committed. But I never ever can hold a non european company liable.
I discovered more and more about victron, the electronics looked really good, and venus os is mostly open source and you can even get a premade release for an rpi (which is not exactly a good arm board).
Then I started bothering installers, and this whole community around victron is about helping eachother making it work and making it work safely.
The great price reduction happened (2023?) and I immediately bought a 3 phase MP2 5000 system and an eel battery and eve cells and started testing how it works.
If I had known how extremely well this stuff worked, I could have just not bought UPS’s for my 19" rack …
I have lots of regret, mainly that I did not do it sooner.
Oh boy, sorry, I am "old:, and I have a tendency to go on the “grandpa talks again about his past”.
Yeah, I have connected the cerbo. Did not create any vrm account. And I was happy for months. It works fine completely cloudless… I have full root access to my cerbo. There are tons of videos on youtube from victron where they take the equipment apart.
But yeah, manufacturing is not done in the EU. Which is quite normal actually. It still is a European company and hence probably qualifies as one for the Austrian regulations.
Show me one company that has inverter manufacturing completely inside the EU. It’s impossible.
Especially since you want Japanese capacitors 
inside your European inverter.
