Analogue systems

Hi, this is my first post here. Trying to find out about the RS
Integrator modular system. 

Is anyone using the rs140 Midi/CV Converter and if so, how do you like
it? 

Is anyone using RSI modules in a Doepfer case and how is it working? 

Do the RSI modules work well with other euro-format brands or are
there some cautionary notes?

Finally, how do like the RSI system overall? Sound? Build quality? 

Thanks for your time.

Adam