No cartridge is good enough.

The cartridge usually isn't the problem. The tonearm and its ability to track the cartridge is. If you feel you are not getting everything from the grooves its likely you have a problem with the arm more than the cartridge.

This assumes of course that the cartridge is properly loaded (should it need it) and is using a decent phono section without problems of its own.

Dear Inna,
The closest things to what you describe are these 2 items although the "optical" cart still uses a cantilever/stylus to trace the groove.

http://www.ds-audio-w.biz/?page_id=39

http://elpj.com/

It's a difficult proposition trying to read physical media without contact while compensating for warps, path irregularities and dirt.

Of course it is difficult. Laser does make physical contact.

Phono is an inherently flawed from the get go 100 year old technology. It'll never be perfect. Probably never much more than possible today. Cart alone is not fo concern. The entire system setup and how well done and integrated (cart/arm/table/phono pre-amp/pre-amp) is.

It is an amazing technology that has overachieved and managed to hang around for a long time. But it ain't getting any better than possible already today, except perhaps for those few willing to devote major chunks of time money and effort in their home to try and make it better.

Optical cartridge looks very interesting. Anyone tried it?
With ELP system, besides other things, I would be concerned about the table itself. I may be wrong.
Japanese are moving in the right direction, I think.
MM/MC cartridge is a very primitive design that we don't have to live with. The turntable itself is a very simple design that we have to live with, no objection from me.