Microsoft Office Communicator: Alternative clients for os x?

So we use office communicator at work. It is annoying to say the least. I work on a mac, so the client I'm forced to use is Microsoft Messenger which is much clunkier than my normal Adium set up. Are there any other/better clients that will work for my corporate account? I already found JBuddy and don't love it. Has any one else has solved this problem? Or do I just roll over and us ms messenger?