Erica Synths shared this video demo that compares two of its Pico series Eurorack filter modules. 

• Pico VCF1 is a Polivoks inspired filter with a screaming resonance and a lot of raw character to it and a bandpass mode.
• Pico VCF3 is a classic 24db filter with a clean sound and great sounding self oscillation.

See the Erica Synths site for details.