Thankyou for your replies everyone. It would seem that the way to go at the moment is to try the titanium strings and although I've used D'Addario strings for decades, they've been on electrics. I've never rated their acoustic strings either steel or nylon. But I've not tried their titaniums so I'll give them a whirl.
I think the only other way for an overall sound improvement is a new or different guitar but that would be a large expense that I can't really justify just now.
Once again, thanks.
