I got these for my SDs and really like them. http://www.shoelacesexpress.com/leatherround.asp
Uni, I bought a bunch of these from shoelaceexpress too but for the life of me could not get the laces to stay tied. They seemed to "slip" right away and untied. What's your secret? Did you apply some wax or leather conditioner to them? I tried mink oil to no avail. Sad because they looked on point!