With this question there are 2 responses which answer the question. both are valid and give good different examples of the situation. any advice on how to accept essentially 2 or more answers would be much appreciated.
Speaking as one of the answerers . . . don't sweat it. You can accept whichever turned out to be most useful to you, whichever you enjoyed reading more, or whichever had most community support. If you honestly find them equivalent on all metrics, then you could consider not accepting an answer. That way community support is the only determinant of their ordering.