Just looked at Foxtel pricing and packages,
http://hd.foxtel.com.au/pricing/
Link on there to view all other pricing and things that have to be brought before HD options.
My thoughts are less NZ choice content, but think pricing is heaps better NZ. Also noted can't get HD movies on subscription with foxtel, got to be all pay per view - ouch.
Noticed on sky guide nz when ask for more info on movie some are showing HD after wide screen logo, seems to be quite a few that will be HD when have the gear to recieve.
Also $200 to upgrade from mysky in Aus.
Summary
Foxtel start up $37.95 v's NZ 49.?? just $11.00 cheaper then NZ's - NZ start has more channels and would cost more then $11.00 to add these channels to foxtels.
$10 HD ticket same on both then if get sports etc on Foxtel have to pay another 9.95 on top of sports package, as far as I'm aware it's justs sports you've got to be subscribed to with skynz, pretty sure the $10 HD ticket covers the rest.