i prefer a n/e over a n/mo myself, haven't tested n/r yet though.
i usually run with:
12+3+1 death
and 12+3 soul reaping
and skillwise i use
1.rotting flesh or something else for additional damage
2. blood of the master
3. veratas sacrifice
4. glyph of energy (elite)
5: bone horrors
6: bone fiends
7: taste of death (or another helpful spell if i got good monks in my group)
8: rez signet
works the best for me, but i think i'll give the n/r a try soon.
gotta love that glyph of energy doesn't need any attribute points.