Ref the 434 - depends on the price and how much work you want to do.
By the look of the pictures, I would imagine the hatches have been left open as per usual - don't know why people do that - drives me nuts.
It doesn't look too bad and as previously said - doesn't look mucked about with.
From what I can see the track pads will need changing - not a hard job and £600-£700 for a complete set.
Road wheels look okay.
Looks like a lot of the equipment is still there - A-frame on the side is a bonus as these tend to go missing.
I would imagine ex-Gulf war and this could explain the state of the interior. Vehicles don't like sand - horrible stuff.
I would certainly want to see it start and then monitor the gauges for temp, etc. Also would want to see it drive and stop. If that is okay, not a lot more to go wrong.
Is it the one from Wayne Meadows? - If so, he's a pretty straight bloke so ask him what the pros and cons are.
Failing that - take someone with you who has a 432 / 434.
The end result will be determined by the price -
A decent FV432 can be brought for around £6500 - £8000. An FV434 is worth more but it would depend on the condition and how much the chap is asking.
All in all, if it starts, stops and steers - can't be too bad.
Markheliops