Hi all,
As the originator of this thread, I am overwhelmed with the magnitude of replies to a question I thought was a simple one.
It looks almost like opening a Pandora's box.
Nevertheless, reading through all the replies and discussions I think I have the answer to my question, namely that concatenating print values is not the best way to go with Arduino, or at least it will not yield any advantage.
I will keep trying and testing my specific app, but this issue is of secondary importance to me at this time.
Thanks to all contributors who made me somewhat smarter......