I meant to say ... blimey Dick... are you sitting on your computer, as that was a really speedy response!!

And in response to irishenglish, having read your post, I'm not too sure what your concern is... the title doesn't suggest that Dick intended this to be a technical discussion - in fact I would have said that both the title and Dick's opening post were extremely general which rather gives everybody the leeway to discuss whatever they like about the subject ... which at the moment seems to be ranging from general - yes I like them, through to "I play one of these" to Dick's more recent technical observations ... which on reflection might actually be veering off topic ... but then it's his original thread, so I suppose he's entitled [grins]