best digital cable,sonic frontier STF-1 transport;

There are many excellent digital cables available. The D-60 is good but many others are better including the Sextet. I have owned both (BNC D-60 & XLR Sextet). You might also consider some of the Virtual Dynamics digital cables. A more reasonably priced cable you could try is the WireWorld Gold Starlight 5.
IMPO: BNC and XLR terminations are best for digital cables. And, if at all possible, try before you buy.
One thing to consider if you are contemplating higher buck dig. cables, they can be tough to sell so buy something that is popular.
BTW: I'm also using the Gabriels. What do you think?

My favorite are Virtual Dynamics cables. Great digital and analog cables

Juan, what's your price range -- new, used? The Sextet is a great cable but it's pricey. The HT Cyberlight is also wonderful, especially with the new battery pack, at a somewhat saner price. And the Tara One ISM is also quite good -- giving up a little air and ease for a rounder, weightier presentation.

At more reasonable price points, I've been impressed with the Sonoran Lambda and Ridge Street Poiema. And the inexpensive Analysis Plus Golden Oval, the grover and the Straightwire Infolink don't give up all that much, but they do give up some -- how much are you willing to pay for that little extra?

Stealth Sextet. I have tried almost all the big names and this is the best-sounding, IMHO.

Neal

I use the SFT-1 transport with a SFD2-MK2 DAC and Ultrajitterbug in my set-up with outstanding results.The connection is with the Kimber D-60,as others reported it is an excellent cable.I happen to have a second SFT-1,that will be used with a ARC DAC-3 in my second rig,a great cd transport.
Regards
George