I agree with previous posts that suggest an AES/EBU cable for the 25 foot run. Long runs were one of the reasons why balanced cables were desinged in the first place. Professional cable applications are all balanced designs. I have always enjoyed digital cables from Cardas and Illuminati/Kimber. I am sure that there are many cables that can meet your needs. The key, I believe, is to make sure that it is balanced.
Good Luck,
Drew