Thanks for the all the input.
I posted in the full realisation, that the question is how long is a piece of string.
But for me, listening to all of the things people have to say is invaluable, for a number of reasons:
1) I get an idea of many of the factors to consider
2) I start to think about which of those factors are more important to me, and which less so
3) you get to hear about the bad things
So it's all good, and thanks for your input to date
Much appreciated
Tim
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