We've recently started using fine silver wire for wire wrapping and making our own headpins. This weekend I made 3 freshwater pearl bracelets wrapped with the fine silver wire (pictures to come!). The huge benefit of using the fine silver is that it is essentially pure silver, and does not tarnish like sterling wire does. It's amazing!
I definitely am considering trying to order some fine silver wire in other gauges (we are using 24 gauge right now), but it all depends on price. However, as I'd like to start doing some more upscale pieces as well as our usual beaded jewelry, it might be worth the investment.