LONDON Decca, Tzar DST and similar cartridges

I have the Decca London, and use it with a Grace 747 tonearm.  Everything you've read is true.  It has a unique sonic presentation, and I haven't found anything that it doesn't play well.  
That said, you will still want to use other cartridges.  My personal favorites are the Nagaoka MP-11 Boron, and a Denon 103R.
If you keep your record clean you won't have an issues with the Decca.  I hear stylus wear is an issue, but can't comment on that as I haven't had my long enough to notice.. A sonic gem..
Norman

ct0517,

That's a great question. In my experience a 1/2 track 15ips master tape is a close to live as I've ever heard. However the Decca really does a fantastic job of simulating a tape. 
We've all heard 'dynamic, sweet, rich,robust,liquid,wet' sounding cartridges. What is unique about the Decca is the rendering of tones. I love jazz trios, I know the sound of live drums, bass and piano. When I play the Decca, it doesn't add accentuation or color to the music. (Most of us actually are very uses to hearing our music colored in some manner).  You can close your eyes and visualize the trio playing like never before. You hear the true piano overtones, the resonance of the upright bass and the real impact of the drums. Nothing is unnatural, which it what makes it unique. Many of my audio friends prefer other cartridges but I believe this is because they are not very familiar with live music. This cartridge sounds live. 
I've listened to old Deccas, new Deccas and three different models. The presentation is the same. If you enjoy live music you'll love what these will do for your record collection. 
Norman