I presently have a pair on OMs under my roof. A '04 OM1A and OM3MRA varnish from 2010.
. I did a short shootout of the 2 with my phone. I'm not used to the 1 11/16" nut width on the '10, but regardless, here is the shootout. Let me know if you can hear major differences.
http://m.youtube.com/watch?v=aJic7m2kT00

http://m.youtube.com/watch?v=aJic7m2kT00