I've got one of those R850 hydro systems. It was my first ever so can't compare it to anything but i found it straight forward and easy to use for the most part.
My only criticism is that the reservoir (45L) may be just a tad bit too big. I found it difficult when cleaning it and changing the water, especially in flower when the plant got bigger. If you go this route I would suggest getting a second reservoir to make cleaning the container and changing the water easier. Unless someone can recommend an easier way.
I also found that having two plants going in that setup at the same time was way more effort. The root balls were massive and I ended up having to add water every day in the later stages. Currently I have one plant going and it's way more manageable in that reservoir. Not using as much water etc.
All that being said I still consider myself a noob so perhaps I was just doing it stupid.