Thanks for the response rsjsouza. So far as I can tell the EVAL-BF706M-EZLITE has onboard debugging via the USB port, so I don't think it needs any accessories.
I see. If you can use their IDE for free on this board, then that is certainly the cheapest way.
Just keep in mind that, if you eventually intend to create your own board, there is a chance the embedded USB does not work to debug it and you will have to consider the overall price of a standalone JTAG debugger and (maybe) an IDE license in the overall price. I have been burned by this in the past.
Also, if you are working (or plan to work) with different AD devices, check if their JTAG debugger also works with their other devices as well. I know from my experience the JTAG debugger I mentioned before works not only with TI DSPs, but also with some of their microcontrollers and ARM devices.
All in all, if it matters to you don't forget to check what is the long term cost of the whole solution.