Kinda' following Scott's sentiments there...
I am by no means versed in
every cartridge out there - but I am left wanting for more with all moving coils
thus far. No matter which one tried (all high output's thus far) they all sound very, very clear - but, quite unnatural
(woodsyi - I'm hoping to mount your Benz soon here....thanks)
For the same given output level, moving coils have much lower inductance and DC resistance. So, for us audiophools, we're often drawn in by the vastly lower coil noise and detail as a result of these electrical realities...it gives us the 'chills' when listening. But, it is really unnatural sounding.
Joseph Grado, who held many patents on moving coil designs believed MC's to be inherently flawed mechanically...tho superior electrically. But, he felt that the advantages of the electrical superiority were vastly outweighed by the inherently flawed mechanical stature that could
never be fixed (moving coil makers try by various means of damping internally, which is why makign a high end moving coil is so time-consuming...it's largely tuning the device specifically as mass product and uniformity is near impossible to small tolerances otherwise) . To that point, that's what I hear each time I A vs. B a moving coil versus and my cheap and cheerful Grado's: they aren't as quiet, they don't reveal the detail, they don't create that amazing soundstage....but they are full, robust, sound more natural/real and I'm just smiling when I hear them (despite their
own limitations).
The $500 Reference Sonata is the place to start (the $300 Platinum uses a too cheap bonded stylus...the Sonata uses a vastly better
nude elliptical...and I know nude is what YOU want

)
Rob, honestly, I think what you
might have done is traveled so far up the vinyl chain with your TT and phono preamp (and the rest of your system), have extracted so much resolution, that you are hearing
all the inherent flaws of your here-to-for previously loved moving coil.
The Cartridge Man's Modded Grado is based on the Prestige Silver - something you can buy for US$150. You can get it re-tipped at
www.sound-smith.com for $250-350 and have a cartridge as good, or better, for less. But, it's a 4.0mv output and has 45mH of inductance and lots more DC resistance than any moving coil yet made...so it will be lacking in detail, slow sounding, etc, relative to your MC. As you already have a good step-up, I'd try a 0.5mv Grado Woodie (every model but the top-of-the-line goes for less than Cartridge Man's)....the 0.5mv models have much lower inductance figures and less DC resistance...so you'll maintain some of the detail, blackness, soundstaging, high frequency production, and speed of your MC - but you'll have fun back in your LP's

Try a $40 Black or $60 Grado Green first as a throw-away to see if you're on the right trail...
Hey, fyi, I'm not dissing anyone's choice in cartridges here - I'm just stating electrical realities of Moving Coil vs. Moving Iron (specifically, Grado) designs and trying to help Marbles reach a place of satisfaction again with his vinyl rig.
Vinyl is a PITA....made a lot better by auto-return for me
