I'll always compliment a good shot without hesitation.
I don't care what format we play, or if it's a bounce or competition round, I cosider it good manners to compliment a good shot.
We should play together some time... "That was a very good shot, Gareth"... "No, I insist your last one was much better, Jezz"... "Maybe, but not as good as the putt you just holed on the last green, Gareth"... etc, etc, etc...