We have been going debating this topic internally for a while now as to what would be the best approach...
We have two cached map services sitting on our server:
1) Map = GIS Data Only
2) MapWithOrthos = GIS Data + Ortho Imagery
The problem I see with this is when we go to update the cached map services, the GIS data is the only thing that is constantly changing and the ortho imagery is maybe updated once a year. so we are wasting a lot of time when we go and update the MapWithOrthos service.
I was wondering if others are doing the following:
this way you are only spending time updating the one map service that houses the GIS data.