I tend to use sheet, as you can cut many tiny pallions very quickly.
To cut that many from wire would take considerably longer, as you
are cutting one tiny bit at a time rather than cutting a fringe of
very narrow strips and thencut right across the fringe, as you do
I have used wire when it was all that was available (such as the few
occasions when I’ve bought gold solder), and it’s been no different
in usage as faras I can tell with the sort of soldering I do, but I
prefer sheet for the reasons stated above.