In that case, I might be of use. We have our 9.5.1.0 EMs running on virtualized Windows Server 2008 R2. We have a variety of environments / setups:
1 MOM, 6 Collectors (5 Agent, 1 CEM)
1 MOM, 3 Collectors (2 Agent, 1 CEM)
1 MOM, 2 Collectors (Agent only)
3 Standalone EMs.