The Pinnacle is just another Taichung rebenaded machine popped out at the same factory that makes Johnford, Mighty Viper, Acra, Smart CNC, and several other brands. This is good and bad at the same time. One, If your distributor has any common sense and you need an out of stock part he can call and get one from one of the other brands. It could be bad as since they produce so many machines they may run out of parts for everything. GuoFeng Taichung will rebrand a machine for anyone with some money so don't be surprised if they are out of stock.
They make a pot load of parts for Hurco (Hence why they look the same) and Hurco being as big as they are will get priority. When My two Hurco VM-20I's came in they had the wrong electrical cabinet doors and I waited several months for a piece of sheet metal with hinges.
A quick search of Pinnacle shows most of their customer base is in the UK so definitely check the local distributor out. The LV147 weighs in at 9000 Kilos verses the Haas VF6 has another 1000 kilos on it. I would be very leery of a machine that weighed less than a Haas, Especially one with Taiwanese Casting.
I know how you Aussies love your Fanuc's so swapping to a Heidenhain control may take some getting used to. They use some odd code sometimes that I can't get my head around. However, The Heidenhain does process really quick so if you are doing a lot of HSM strategies it will probably run all over the Haas, especially the 5X. Haas is Fanuc friendly so you just have to weigh out what you would prefer.
Haas, hands down will have the best service of the two. If I blow a spindle at 17:00 on tuesday there will be a new one with a tech before 06:00 Wednesday. Those vans are pretty well stocked up for most emergencies.
You will get the Haas naysayers that are running Okuma, Mori and other high end machines but anymore the tooling is the limiting factor of a machines capability (IMO). For general machining Haas will perform just as well. Unless you are trying to hold sub micron tolerances at warp speed the Haas is the best ROI. Many people still think of Haas when they first hit the market and couldn't pull a greasy string out of a cat's ass. They had the nickname 'Haaspower" because of the over inflated 15HP spindle that was more like 5HP. Now you get a proper 30HP spindle standard and can go up to 50HP for only $9k more and its brute force, even Okuma doesn’t offer that.
My advice, stay away from the Taichung. So far I've had the Johnford SDMC-6000 (Identical to the Pinnacle DV). Nearly $1 Million and spent more time down than making parts. A You-Ji VTL that never made a tool change without kicking out a keep bit relay # that had to be reset every time. (Changing 120 pound tool holder blocks manually over head suck).
Here's a pic of my Junkford and a pick from there website of the DV. Aside from the sheet metal it is identical down to the color of the tool changer. Nothing but grief....