MJA,
A defender 130 is an awesome rig. Aftermarket parts are cheap as, and with a TDI the parts bill when things break is quite cheap too. TDI's can be fairly spritely if youve got the time and $$ to tune them up properly but it is basically a truck so dont expect too much.
Don't write off a TD5 as too complex either, if you do the learning they are actually really simple, especially in 130 guise as there is no ABS, Traction Control etc etc to mess you around. But buy in price is usually pretty high.
For example you could change a head gasket in your shed at home with only a few tools on either a TDI or TD5.
When I was in NSW I used TR Spares in PADSTOW to get my parts and did most stuff myself on my old TDI, was super easy.
Best part about any Land Rover and this site is: No matter what problem youve got or modification you want to bolt on, theres someone on this forum thats done it and documented it and probably wouldnt mind having a chat on the phone and talking you through it.
Drowned my td5 and everyone basically diagnosed and fixed it via this forum.
You just cant beat that!
Dont worry about the aircon just use beaded seat covers and keep the back window open, plenty cool enough and I'm in DARWIN!
[IMG]http://www.aulro.com/app/data/500/medium/image114.jpg[/IMG]

