Thanks again for all the excellent advice.
Just a couple of things that come to mind from all the advice.
Cambelts / sensors seem pretty crucial on these engines .... was is this something that is terminal if fails ( i would imagine the cambelt would be pretty disastrous but what about the sensor ?)
There seem to be lots of the 2.6 around so would this be the best option verses the 3.2 which appears VERY thirsty ..... or an older 3.0 but still the facelifted versions.

Also we come to the ex-plod machines ..... 3.2's that are pretty cheap but dont seem to have the full specs as you and me are in effect paying for them .... quite right too !! .... And they usually have more miles than Starship Enterprise !! :-/
I have around £4k'ish to spend and now barring the above queries wonder whether to go for a blast of the ex-plod 3.2 and run it like hell or cherish the 2.6 and polish it and talk to it !! :-? :-?
PS the ex-plod sure has an effect on the motorway as I moved over very quickly when on 03 plate white estate came up behind me pretty rapid just the other night .... and yes most other cars moved pretty quick too!! .... Just a 3.2 estate with Mr and Mrs and two kids in !!
Cheers