First off, it sounds like "they" are changing the definition again. The following quote is from a WebMDHealth news item dated May 16, 2005:
The new definition released this weekend changes this; it classifies "normal individuals" as having normal blood pressure, loosely defined as a systolic pressure of 115 and a diastolic pressure of 75 PLUS no signs of heart disease or stroke, few if any risk factors for cardiovascular disease, and no apparent damage from high blood pressure to the kidneys or other organs.
It will, no doubt, take some time before all the doctors start going by this new definition, but mine used it when I saw her two weeks ago.
How aggressively you should medicate your HBP is probably something you and your doctor should work out together, depending upon your personal risks. I'm currently not on meds (got off them in January!), but because of my other risks (family history, high cholesterol, high homocysteine, high Lp-PLA2 test results, poor LDL density pattern), I've decided that if my BP average at home gets over 135/80, I'll go back to the doctor and ask for meds. If I should need to go back on meds, I'd try to aim to lower my BP to an average of no higher than 120/80, provided that my lows with that average didn't give me symptoms. You might reach a different conclusion.