Have not used Parsec although I hear good reviews, not sure if it support Macs but i can talk about Teradici CAS on the mac environment, not the Teradici hardware
Pros: Big deal for Apple to allow them to do remote desktop
Not bandwidth intensive but good idea to apply some bandwidth reservation/ priority on the firewall traffic rules
Leotsream server is required for mid to large deployments
Latency and responsiveness is acceptable to work
AV Sync feature is awesome and comes handy to sync video audio with the remote station
Cons: Only support SRBG color profile and finishers do not like it
the resolution adjustment from remote to client is a bit of of pain but if you keep it consistent providers better experience(find out a set of resolutions, monitors, that works)
As soon as you login remotely you lose the on premise interaction so you have to reboot to use the box onsite.
All of the above features are going to be addressed in the next release according to one of their senior engineers that we meet at NAB.
if anyone is using Parsec can you share some field epxierince, like how is the sync, responsivnces, how can we use it on the new Mac what is the bandwidth requirements for 2k monitor, does it support wacom ...