What's the most accurate meter to you? A long time ago I had some key chain $20 thing from walmart and it almost always gave me the number I felt like. (ie if I felt low i was right...) but in a small town walmart doesn't really have all the options. It's either that or cvs. But anyway, I bought another meter recently and I swear if I uncross my legs or blink my reading can change 30 points. I can dab blood and get 108, and know that isn't right so I do it again and it's 137. Any suggestions on how to feel comfortable with a reading...or a meter that seems to work like it should?