I'm looking to buy one that I can keep on constantly. I don't really want the chest strap type, but if they are really better then I will look at them. I just want to know what's happening to my heart, it seems to play up when I feel ill, I feel my heart sort of stop and then get going again, more palpitations etc.? Any info / advice, which one do you have? When I'm feeling better I don't have these problems so something is going on to affect it. Be nice to understand it a bit better.