They really are awesome switches. They are not the cheapest, so if your goal is bargain-basement switching, Ubiquiti or another inexpensive network gear manufacturer may be a better match for you. If you want consistent, reliable switching with a great feature set, they are tough to beat. We previously had HP ProLine switches in our old office, and the 9300's are an absolute DREAM compared to those.
We run different VLAN's for each service, per floor (One for Voice, One for Video, One for Zero Clients, and one for Workstations), and it really is a snap getting all of those configured. If we need to push a VLAN down from one floor's switch stack to another, that too is quite simple.