> The TeXLive package manager cannot do on-the-fly-installations yet. OTOH, > TeXLive directly accesses CTAN, while MikTeX is bound to its own repository. > So I guess TeXLive is slightly more up to date (and more complete).
MiKTeX's packages are automatically created by a script when CTAN got a package update or a new one. The generated packages are on CTAN and thus on all mirrors too. regards Uwe