It is important to note that there are two distinct classes of recommendations in the new American guidelines for treatment of high blood pressure: evidence based and opinion based. The evidence based guidelines for treatment of high blood pressure are based on factual data. In other words, these are strong recommendations that carry the weight of concrete evidence that came out of a large number of medical trials. The opinion based guidelines, on the other hand, do not have direct evidence to back up the recommendations. They are mostly based on the opinion of the doctors working to develop the guidelines.
I will only be stating the evidence based guideline because this is what really counts. Different doctors may treat high blood pressure differently but you need to know what the evidence from latest medical research suggests. In the end, the actual decision about how to treat your high blood pressure should be between you and your doctor.