RDP Client for iMac the full version

We are responsible for our FDA clean room, security, emergency power, fire and other client/server systems at our medical device company, which requires Remote Desktop control to our different servers 24/7. It was a little higher priced, but turned out to be well worth it so far. When our servers started to switch to server 2008 R2 (64 bit) OS’s, my Microsoft RDP for iMac would not connect. This software works great with my 27” 2013 iMac with Maverick OS (I prefer using my iMac instead of my company supplied slow PC laptop). I like the way it is layed out and the side tree sort of view of all of our different servers listed. I can be connected with more then 1 server at one time and can easily switch between them. So much better designed then Microsoft RDP.
The thing that really impressed me, was having support and direct communication response direct from the author. If a product is designed and performs well, I am willing to pay for that quality. So far going very well.

White haired guy about RDP Client