i have a diy eurorack rob hordijk benjolin (not the epoch one, the other) which i’ve fallen totally in love with.
while i think most of the times i prefer playing it on his own (with just effects added) i found out that integrating it with the rest of the system can lead to very cool stuff, especially if you use vco b square out as master clock for your whole system (i use it to clock makenoise tempi and then distribute divisions\multiplications around). the rungler output is great for chaos modulations as well as the xor out and all the individual outputs.
another thing i love is that given the huge range of the oscillators it can do very very different stuff! definitely not a one trick pony.
i was so in love with it that i decided to try to port it on the orthogonal devices er-301 platform, so i built a custom unit based on it, also thanks to michael hetrick rungler reaktor block that gave me insights on how to emulate the primitive 3 bit DAC in the rungler (i got the shift register thing on my own but couldn’t figure out the dac portion without some help).
if you have a 301 please check out my port, it’s called Bengiolino +
of course it doesn’t sound as the original given the digital nature of the 301 but the mechanism and the results are pretty close imho. and i had tons of fun (and headaches) in trying to implement it 