Comments on using Rapid Serial IO Megafunction on Stratix IV

Hello, I am thinking about using the Stratix IV and TI's TMS320C6657 DSP in my next design. I am planning on using Rapid Serial IO to connecto the Stratix to the DSP. I would like to know from others who have used Rapid Serial IO in their FPGA designs their experiences in using Altera's Rapid Serial IO megafunction? I do not intend to use any soft-core processor on the FPGA. If anyone has used the Rapid Serial IO please let me know your comments.

Thanks,
joe