I have the MP-500--a fine cart, tho I haven't listened to it lately. In terms of MMs, my current fave is a Shelter 201 w/SAS stylus. Signet TKLca is a top performer as well. I'd put the Nagaoka on a tier below that, along with the AT-50ANV.
You've inspired me to mount it now.
You've inspired me to mount it now.