As stated C-17's were simply a personal opinion, they're the only aircraft capable of airlifting any current and future NZDF pieces-of-kit to staging posts in Northern Australia (and thus onto Timor or beyond) eg LAV's, new recovery support vehicles, NH90's, etc (and how about future containers - eg pre-fitted command and control or mobile hospital etc - it's about time the NZDF were "wired" up and ready to go ... rather than use tents and boxes (i.e. the time to unpack and establish operational readiness etc). Could also be A400's, once publically toted by the NZDF but not so much nowadays. Whatever it may finally be, C130J included, the money will be found for capital expenditure - that's a different game in which the pollies get to sit at the big tables, and trade deals discussed etc. The ongoing operating costs will be the key (and could thus rule out the likes of the C-17 just looking at the comments on the RAAF thread recently), even the LEP Hercs operating costs (with legacy engines and poor fuel economy compared to the J, will hopefully see them retire around 2020 if not sooner depending on replacement timing (and hopefully not see any second hand H's bought etc).
As for ACF, I'm not saying ACF (that's either long term or never again), I'm saying "training" to prepare the 3 services for their deployments and other (so yes, we can put aside F/A-18 HUG's, F/A-18F's, Grippens) .... if the Govt does agree to this (it's being mooted) then the options in the interim (i.e. under present budgetary environment) would be using existing aircraft that are in storage eg Macchis. But also a wild card in the medium term could potentially be LM and their TA50 or F16 depending on what external events kick into play. Or of course no more jets once and for all, the pollies prefered choice, but that depends on how well Defence make the case. I'm being postive on this last comment - 10 years on Defence is thinking "jointly", the Navy knows (always knew anyway) what it is "missing" (as they have always inter-operated with allies and fast jets) and the Army, thanks to A-stan, now realise the importance of what was lost. I'd say for the Army, their future is already here, and they are in amongst it - non-state-on-state/irregular conflict, concerted international/coalition efforts and air-power backing it up. They need to communicate with their coalition partners/air power ... or else not bother turning up for the gig and stay at home or peace-keep the Pacific - somehow I doubt Army only want the latter!!!
In the short term, the other likely RNZAF acquisition could be the short-medium range transport/patrol, and there's been speculation on more A109 type helos (which has to be a given due to the number already bought - 5 verses the various roles expected of them, cheaper to operate than NH90's so at a guess this makes Treasury happy. UAV's will be the interesting development to watch.