Got my first hyper elliptical stylus for my turntable today and I'm amazed that I didn't bother with getting one sooner. Added lots of detail and it's greatly reduced inner groove distortion on some of my more questionably mastered records.
I can't use an elliptical stylus with my turntable without changing the headshell... I learned this when I bought a new cartridge (they discontinued the spherical one apparently).
I added an elliptical stylus to my TT just after Christmas and I wouldn't even bother playing records without one now. A separate phono stage also gave the sound a massive boost.