you can easy strip it from its isolation, its thicker than a paperclip, its cupper so better conductivity, also its clean after stripping, so soldering is a breeze, and its much more easy to bend in shape of the tracks with needlenose pliers.
did i forget another avantage ?

yes, i got meters of this stuff sitting in my shed after completely rewire-ing my house when we was renovating it.
oh and if you do need a thinner one, just take the black, thats thinner than the regular wire.