Filter 8 is swapped in and out of my rack as needed. When I don’t require a third filter, it’s always the first to go. My other two are 3 sisters, which never leaves, and Instruo i-o47, which I’m iffy on, but has a nice notch mode.
Filter 8 is useful, but lacking a specific character. If you want many mode options (or 8 sine LFOs), Filter 8 is versatile, but it may not be best as the only filter in a system unless that versatility is critical.