I do too. As Eusti said, it's an emulation of a very old synth, so it has its character, and its process, sound design-wise (it uses "tremulance" instead of "LFO" for instance). As I love these old machines, I use it in almost every song (together with the X-705), even if it's only in the background (but often as a lead). The oscillators are additive with a twist: you define which harmonics ring, and to what extent, up to the sixteenth (a little like draw bars on organs). Among its other idiosyncrasies are separate up and down pitch bend settings, also separate per osc; a dynamic filter with auto sweep; an array of conventional effects done in an unconventional way with a lot of character; an enormous number of CV inputs on the back (90!!) as well as a wealth of settings; and, last but not least, a huge number of expertly crafted patches. And it's beautiful to look at.
Here's a recreation of Oxygen IV made with the JPS and the 310 Unique: