Re: Stack vs. Rails
I am a big fan of the SD Stack pickups. They are a little warmer/middier than a true single coil but it's not a big departure and I actually prefer them to true singles tonally.
The VRs/Ducks are closer to a true single coil tonally and the clean tones are excellent though I find under gain they stay a little too clean for my tastes. True singles seem to have a little more growl under gain. It may be an outout issue and though i've never tested it out I think true singles tend to have a little more output.
Having heard the new 'Stack Plus" pickups I can tell you they are worth waiting for.