Yer I agree with you mike, mines on 106k now and is running lovely, just over standard average power so that doesnt seem to be lacking and the condition is good too!
However, with high millage engines youve got to remember that the rest of the car has been put through that many miles too, the engine is big considering the size of the car and so dont think it would have been put under too much load via that so its only really when your hammering it!
Ive experienced both a low and high millage motor and got to say that the high runs far better and smoother than the low engined one!
So choice is yours mate, but id go for something thats done a few miles but got good service history or has a lot of recipts and you can tell has been looked after!
But also buddy remember that the service book can never really be fully trusted as aits not that difficult to fraud it is it, its only stamps, dates and millage!
Plus the fact that I think if you know a little about cars then and you service them regularly then you can do a as good as or better job than a garage! Plus the fact that you know everything has been done then too!
Danny