Well - I would sooner have Tim Henman than John McEnroe who is regularly on the box.
John McEnroe may have undergone a mouth makeover, but he was a brat on the court and Wimbledon officials just looked the other way. I also saw him at Queens Club umpteen years ago, and his foul-mouthed antics just spoilt the match for me. Later that evening he had a rant at us spectators saying how ignorant we were!
So, where possible I try to avoid having to listen to him - that is until he personally apologises to me. What's the chance of that I wonder!