I use Planet Waves nylon straps. I have a couple of the Joe Satriani models, and a few other random patterns. They're more comfortable than standard nylon straps. Either they weave them differently to make them softer, or the infuse some kind of padding into the stitching.
Dunlop Nylon: good thing, nice looking, durable but very stiff. I don´t like it.
Planet Waves Nylon: bad seams etc. = don´t like it
5 bucks leather strap: very comfortable but it´s too wide for my taste
EB Nylon: good one, very cheap, everything perfect.
I´d go for an EB Nylon or try a nice one made from leather, but they appeal to cost much more than the standardstuff.
I love the DiMarzio Cliplock Straps. I also love the Levy's leather ones. I have a Levy's MG773 (I think thats the model) and its nice and comfy on my shoulder . Its the same model strap that Metallica uses. When I get my JP6 in November, I'll be putting my black Cliplock on it though. I do like the Levy's though due to the adjustablility, cuz sometimes I want my Balls to hang low .