The CA cartridges are mostly mid compliance, the Ortofons and the Dynavectors are higher compliance... I would probably try to stick with mid compliance cartridges as that is what CA make for their own setup - the synergy is likely to be better.
As such I would be looking at:
CA's own cartridges (obviously)
Benz Micro ACE and Glider high output versions (or further up their range if budget allows)
Audio Technica AT7V - this is a very nice cartridge, little known and a descendant of the legendary Signet cartridges, mid compliance eliptical MM - a real bargain.
The Lyra cartridges are also mid compliance
Nagaoka MP500 - this long time cartridge maker's top MM is very very good indeed, and should be competitive or superior to the very best MM from CA (at half the price) - also a suitable mid compliance.
The CA moving magnet cartridges all use the same body/generator (OEM by Audio Technica, same format as the AT95, but with differing and much superior internals) - all that varies is the mounting (aluminium or differing woods), and the stylus fitted.
A number of people have purchased the bottom of the line CA MM cartridge, then sent it off to one of the retippers (SoundSmith USA, Expert UK, Schallplatenadeln De, etc...) to get fitted with a top flight cantilever and needle - all up cost for the custom job comes up to less than half the cost of the top CA cartridge, and those that have compared it to the Virtuoso/Maestro find it at least as good... possibly better.
Lots of talk about this in this thread http://forum.audiogon.com/cgi-bin/fr.pl ... 1200430667
(very long, over 7000 postings... the CA cartridges were discussed over the last 4 months or so.)
bye for now