Cartridge reccomdations?

SHURE Ultra 500 sounds good everywhere, quote from David (dlaloum).
I couldn´t agree more, after nearly thirty years´ experience. Still reigns.

Masterplan - If you are happy with the sound of the Shelter 501 III - why not have Soundsmith retip it !

You could have it upgraded to the more advanced stylus profiles like the Shibata, Contact Line or O.C. Contact Line.

You’ll get more details than the elliptical profile provides while maintaining the current;"tone" of the Shelter.

You will need a very accurate protractor to setup the cartridge, like the Mint Tractor, but the investment is well worth it

Drawback - It can take about 6 weeks, but well worth the wait

I have a Denon DL103 and purchased the same cartridge from Soundsmith with the O.C. Contour Line stylus and the ruby cantilever for around $650 - the improvement was nothing short of amazing.

I’m now thinking of sending the old DL 103 cartridge for some of the same treatment to have as a spare (in case of accidents) Maybe I’ll try the Shibata profile with a boron cantilever, which I think might be a little more forgiving in setting up

Regards - Steve

Masterplan, I suspect that you would get far more bang for the buck by improving record cleaning first. Going from VPI 16.5 record cleaning to ultrasound was a bigger difference, for me, than going from high end MM to higher end Koetsu.

The added advantage of record cleaning is that you are likely to increase stylus life, because the grunge in the record groove tends to contain diamond dust. Or so I have read. YMMV

Hi,
You can't go wrong with a Lyra cartridge.  I have owned a Delos for several years and really enjoy its performance.  The diamond/cantilever assembly is manufactured by a company in Japan that makes scanning electron microscope tungsten tips so they know how to work in the micro world.  The Delos replaced a Benz Glider.  Both have a Boron cantilever, but different diamond stylus.  The Delos being a line contact, meaning the tip rides in the record groove at one small specific point.  The only hic up is 'fuzzing' of the paper belly cover.  Not a big deal.  
What type of phone stage do you have and can you select various gain/loading points?  What type of arm do you use?  Loading and Gain and arm mass are very important when selecting high end MC cartridges.   Give the people a call at 'the needle doctor', they can help you out. 

op

u need to provide a lot more info to get helpful responses

system? in particular phono front end and amplification

budget?