Graham, a few things to think about before buying a Makita chainsaw,
I am not sure of you level of expertese in chainsaws so I will look at it a couple of ways,
First, Makita chainsaws are not overly common in Australia, chainsaw dealers that sell them are few and far between, parts cost and avlability not very good,
you can get them from tool shops like Sydney Tools for good price on some models better than you can buy the same size in Stihl or Husky, but places like Sydney Tools and the like mostly never have spare parts for them, Makita Australia are not fast with the parts and do not stock a big range of parts, chainsaws are less then 1/4 of 1% of biz for Makita in Australia,
So lets say you know a lot about chainsaws and can do all the work on them, you still have to get parts, so you will have to find a dealer who has parts (someone on this site may know some) and get them(most likely they will not be close to where you live) you can get parts for them online, some in Australia but mostly in the US,( one Ozzie AS member who runs Makita chainsaws said the most cost effctive and quickest way he can get parts is a line from the US and that takes 3-4 weeks to come,
On the other hand say you do not know much about chainsaws and like to take it chainsaw shop to get work done or parts, well good luck finding one, ( if you do get one well and good!) but say you just take it to a Chainsaw shop near you, (most likley it will not be a makita dealer) the shop then has to find the parts and fix it, service will not be quick or cost effctive because its not a brand they support or have to back up and if never go back to them i do not think they would lose any sleep over it,
the point I just made is that very few chainsaw Brand Shops care much for work on other brands that they do not sell,
And one other thing to think about if you do a lot of 4x4 and a cutting a lot on tracks when out and about, if you break something on the Makita (other then bar and chain) you most likley will not be able to get parts for it when you are on the go, but if you have a Stihl or Husky there are dealers of one or the other in most towns with a pop of more then 2000 and some smaller or not far away any how,
I am not baging the Makita saw its self, i hope this helps its JMHO