Hi Mittsy,
If you want a cheap reliable 110 work truck you can't beat a Perentie. Set it up exactly how you want it and it will give you years of trouble free service. They are very tough and allow a custom fit out very easily. You could pick up a tenexed(rebuilt) example with around 5000-15000 kms on the clock for around 12-14k. I scored mine for 14k with 5000kms on the clock. My daughter picked up an awesome FFR with 10000kms on it for 11k about 3 months ago in Brisbane. Try getting a Defender with that sort of mileage on the clock for those sorts of prices! Perentie's are exceptional value. If you purchase the guide to buying a Perentie you will have a good understanding about what you need to look for. Check it out on the Military Coil Sprung section of the forum.
The Isuzu 4BD motor is good for around a million kms if serviced regularly and looked after. I use mine as a daily work vehicle and am very happy with it. If you want it to double as a family vehicle on weekends then you would be better off with a Puma or earlier model defender, maybe a 130 as others have suggested, as you will get the rear seat and rear doors. Reliability will not come close to a Perentie though. 
I picked up a 2000 year model commodore wagon as my weekend family get about for a very cheap price and it does the job way better than a Defender for taking the kids to footy and getting around to the shops in my opinion. Perentie for the tough jobs and commodore as the family shopping trolley. Works for me! Good luck with your quest for your family and buisness requirements.
Regards Warrick.
				
			 
			
		 
			
				
			
			
				"Any intelligent fool can make things bigger and more complex....It takes a touch of genius and a lot of courage to move in the opposite direction."
Albert Einstein.
			
			
		 
	
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