Behringer Model 15 vs KOBOL Expander SIMPLE TEST Only 1 Oscillator Saw & Square + Filter + ADSR

I want to know if I really need all the Behringer synths I have. To do this I have done a VERY SIMPLE test comparing just 1 oscillator to see how the different filters and envelopes affect it. Moog Matriarch / Sub37 / Subsequent vs RSF Kobol Expander Roland, Arturia, Sequential, Moog, Korg, Akai, SOMA, Novation, Oberheim, Waldorf, Yamaha Eurorack