Age old discussion I know but MM or MC? Benefits?


Some mighty long discussions on this already here but I need a refresher!
Having decided to upgrage my phono amp to a Dynavector p75 mk3 I am now wondering about my cartridge.
At present I have a Clearaudio Emotion 4 table with a Clearaudio Artist v2 cartridge.
What are main difference between mm and mc that I could expect to actually hear?
And lomc and homc? What is all that about?
Sorry if this has been thrashed to death already but just trying to get a laymans understanding if possible.
128x128uberwaltz
Paper specs are not always the be all and end all of system synergy as your experience shows.
Part of the reason I am trying to glean as much info as possible before diving headfirst down the rabbit hole again
Simple. For rock you don't need MC cartridge. What you need is a great turntable. Upgrade it if you can. You also need great amps. You might want to upgrade your cartridge to another MM later. Well, you could try $1600 Lyra Delos if you must but why ?
@inna 
This is the rabbit hole getting wider and deeper.....lol
For the smaller percentage of vinyl listening I do compared to digital I probably would not want to spend much more on another table right now, heck maybe the set up I have right now is more than good enough, but you know exactly how that goes.
Great amps? Hopefully my BAT VK600SE has that covered.....
The Dyna preamp that you bought or are going to buy is what should make your decision for you. It has a current-gain mode for MC carts only. Reportedly works especially well with Dynavector carts. I tried one with the DL-103R and was not that impressed, but others in reviews and on forums have found the current gain mode the way to go.
@maxson 
I did have that thought in the back of my mind, after all if dynavector can't build a cart to match their phono stage its a poor show.
However lots have had good success with other mm and mc carts with the p75.