I'm kinda a newbie here but I have the mp-200 and I loved it... until I discovered the world of MC carts. If you're looking for more detail and refinement, save up and go for a HOMC. Maybe a Hana S or lower end Dynavector. I really dug the balanced and warm way the mp-200 presented the music but in terms of detail and realism, there's no contest. To be fair, the MC cart I got to replace the Nag was around $700 but it was worth it! On another topic the tracking ability of a Shibata or Microline stylus is way better, especially if you listen to classical music with it's large dynamic shifts. Of course you can get an MM with said styli but I'd make the jump to a decent MC.
MP150 or MP200
I am currently using a Nagaoka MP110 cartridge and want to upgrade . I really like the Nagaoka sound and was considering staying with the Nagaoka sound . My question is will I get a considerable upgrade in sound going to the next level cartridge which would be the MP150 which would be a 329.00 investment or in order to get that big upgrade I would have to go to the MP200 which would put me almost at the 500.00 mark .