Well, I have the "whatever comes in the MIM Strat" pickups in mine now, but looking to switch to Barden's. There are several Barden-equipped Strats at our local shop and I have a buddy that plays one. I had always been skeptical of "single-coil voiced humbuckers" because they sound terrible, but these Bardens are the real deal. They sound like everything you love about a Strat, just more of it. Beautifully balanced from low to high. Roll the volume and tone back slightly and you can find all your vintage Strat sounds. Turn them up and you find a hotter sound that's still clear, focused, and balanced. I'm putting some Bardens in my upcoming Tele project and I hope to afford some for my Strat soon.
By the way, I think they achieve the "single coil" sound out of a humbucking single-coil sized pickup is by winding for low output and using fairly strong magnets. The result is that they actually have a fairly high output, but don't get muddy like a normal hot humbucker can.