As of last week and until at least November 2006, QF still show QF 45 / 46 SYD-CHC-SYD in either a 763 or 743 - both with a Business cabin. Only one return flight per day. There are DeathStar flights too - if you want no legroom and no service in Economy only.

I can certainly recommend going to CHC. Plenty to do especially if mountains and great scenery are on your agenda. Of course, WLG is an option too (take the ferry to Picton and explore Queen Charlotte Sound). Check out the Marlborough wineries around Blenheim.