Love the shelter 501MK2, what's the next step

Thanks for the feedbacks.

How much therapy can one get for $5K!.

Up to $5000.00 key word is "UP" it doesn't have to be.

I am currently happy at $1200.00! What get confusing is when I look at Needledoctor.com and there is 80 cartridges available from $1200.00 to $5K! it get complicate real fast. and than there is another 32 above $5K.

My whole cartridge experience is with one.. the Shelter 501MK2 and I don't think that any dealer have a large selection that you can borrough for a weekend. Secondly, it is kind of a catch 22 with the dealers they like what they sell hardly objective and you can't blame them.

The only information that I can gather from here and published reviews.

The problem with HIFI is as your disposable income increase with age your hearing ability goes down.

If you go from a 501 to a Harmony, Kleos or any other suggestion, what benefit should I expect or am I limited by the tonearm as Audiofeil indicated ? then it opens another can of worns, if I change the tonearm, what would I gain.. but that is for another day, I intend put some mileage on the SME first. it is easier to justify a cartridge as I had the shelter for 4 years.

You guys are very good at spending someone else money!

Based on the reply so far on the associated equipment.
Is my shelter one of the best cartridge that a Phono preamp and a tonearm can take advantage of?

I do like SQ that I have already. As I mentionned at the beginning, I am wondering if any other cartridge would make me happier while keeping the the sound signature that I currently have.

The suggested cartridge are so far:
Shelter Harmony
Lyra Kleos
Clearaudio Virtuoso Wood

Anyone with an Oaracle delphi MK VI and Oracle SME 345 tonearm to chip in?

---------- Correction -----------

Is my shelter one of the best cartridge that a Phono preamp and a tonearm can take advantage of?

should have read:

Is my shelter one of the best cartridge that MY Phono preamp and MY tonearm can take advantage of?