Spherical vs "elliptical" stylii Options

[Pio2001]

I listened to a vinyl that was a little worn out today, and wondered if my stylus was getting old.
I recorded the same LP with both the current "elliptical" (in fact a Stereohedron) stylus and a spherical one, that has not been used very much. Listening to the samples, I realized that the problem came from the vynil.

Now, if someone is interested, I've got samples of the same Lp read with the same Trackmaster catridge, but with a spherical (AL) and an "elliptical" (EL) stylus.

[Cygnus X1]

The "spherical" styli that you speak of, are those the same things I often hear people refer to as "conical" styli? I've always heard that eliptical styli play the vinyl deeper in the groove than conical styli and are thus supposedly better, so that's why I went with elliptical.