I have an Omron automatic digital one at home. Have had it for many years. very reliable. The readings with the wrist one seems tricky...this one, all you do is wrap the cuff on your arm , hit a button, it inflates on its own and gives a reading..and it stores your last one...When I bought this one, this was the best brand on the market..
The tips I have been told... do not take it every day; do not take it repeatedly in one day..BP fluctuates as the day goes.. exercise, being upset, nervous, etc,,,I have white coat syndrome and you would be surprised at how much that affects it....it takes quite a few days for the meds to kick in completely..so give yourself till the week end... at least that is what I would do...the more you stress over it the higher it will go...take a few deep breathes, relax and then go for it!!