I use their dyn3 compressor quite a lot.
It's simple, the visual is nice enough, and it sounds fine for a lot of stuff.
D-verb gets an outing once in a while although I generally go for waves r-verb first.
I think, most often, I use D-verb where I want something to stand out a bit, rather than blend in, like an instrument solo.
I use lo-fi quite a bit with distortion + saturation < 5...Maybe on a bass instrument that just sounds too clean.
I can't remember if I use their de-esser or waves.
There's nothing wrong with their eqs either - I've used them where sessions sharing/compatibility was important,
but for sessions on my own I'm more familiar and comfortable with waves req + q series.
It's not really a sound thing - Just a case of being more familiar with one UI over another.