I agree it's expensive, but it's worth it. For an area of more than 50 square meters and with such a large tank - all models cost about the same, some a little more.
Its pros:
The ability to work more than 10 hours on one bay, regardless of the purity of the water, silent operation, electronic control, without remote control, but with a convenient display. There is a working ionization system.
Cons below:
There was not enough space to put where I wanted. I had to mount a separate shelf for tSee full review