personally i like the cursing umbreon more than any stalling umbreon i normally run:
Umbreon (M) @ Leftovers
Ability: Synchronize
EVs: 164 HP/94 Def/252 SDef
Sassy nature (+SDef, -Spd)
- Payback
- Curse
- Wish / moonlight
- Protect / mean look
you can move a few (not too much) Sdef evs to def...