Widows 2008 TS or Citrix Gateway ?

Around 12+ users will access Nav 2009 R2 RTC (W1) remotely. In this regard, we had few clarifications before we go ahead with the solution.

  1. Which TS (Windows 2008 R2 or Citrix)would be better considering the No. of Users (12), the license cost and server infrastructure involved

  2. Whether RTC can be published in Windows 2008 TS or Citrix considering it requires Windows Authentication. And also if you let us know how this authentication works

  3. And the network bandwidth required

Your thoughts in this regard, would be highly appreciated and also will be very helpful
Thanks in advance.