Proteus compared to MSL ultra eminent ex

In my experience the best in this regards would be the original Ikeda 9 series, the ones without cantilever. It has the most explosive dynamics I've ever heard. Lots of references to it here, just do a search. The 9 Rex is considered the top of the tree. But this is a very hard to find 'old' cartridge and no longer available new.

Also very strong in dynamics is Ortofon A90, which also fits your requirements. The A95 is very similar and even a bit more refined, but has a slightly higher impedance. Both have been deleted, but they're less hard to find and Ortofon still offers complete rebuilds for them. Another strong contender for dynamics would be the vdHul Colibri, but it has an even higher impedance.

I have no further knowledge of current top MC's, as prices have gone insane.

Thanks edgewear.

I've read reports that Transfiguration has folded, so the Proteus is now out of production. But it seems there's still some stock floating about, so grab em while you can!

Yes, the company has folded. 

Arsh, I think edgewear was on to something with the A95. The Windfeld Ti is the A95 in a body. It has a 7 ohm impedance and 0.2 mv output.
This is a great cartridge. It is a fine tracker and is as neutral as they get.
Now, if you really want mid bass slam and snare drums that snap get a Clearaudio Charisma V2. I have never heard a moving coil cartridge punch the way this thing does. I listened to the Chilli Peppers Blood Sugar Sex Magik  last night. Flea's bass jumped out of the speakers. 
It tracks like a bandit. It has exactly the same stylus and cantilever as the Goldfinger. I had not purchased a MM cartridge since the late 70's. After reading some reviews I got a wild hair and bought one. Comparing it to the Windfeld Ti, the Windfeld has less punch and is more neutral where I think the Charisma is a little more tilted towards the bass. Both are very quiet trackers. Both have perfectly aligned cantilevers and beautifully mounted diamonds. I get the feeling that the Windfeld has darker backgrounds and perhaps it is a little more detailed but the real eye opener is the dynamics of the Charisma. Some of this may be due to the phono amp. Very quiet phono amps with more gain may bring out dynamics in moving coils better. All this is no reflection on the Windfeld Ti. It is just that the Charisma is that good. If Rock and Roll is your thing this is your cartridge. 
My Sonic Labs makes an excellent cartridge. I have heard the Signature Platinum through a CH Precision Phono amp through a set of medium sized Wilson's (don't remember the model.) and it was beautiful. I would not pay that much for it. The only $10,000 cartridge I would go for would be the Lyra Atlas. The Ultra Eminent Ex is a similar design with an even lower impedance and different body material. It has to be a better value. It is just about the same price as the Windfeld Ti. 

Some day some smart wealthy audiophile is going to buy one of every cartridge out there and rent them for a week at a time. When you return it safely your card gets refunded. If you buy the cartridge the rental fee is deducted.  Elusive Disc and Music Direct should start offering such a service. I would use it in a heartbeat.