I bought a CVS brand meter and tested yesterday. Here are the results:
Fasting - CVS: 104, Accu-chek Aviva: 86
2 hours after dinner - CVS: 136, Accu-chek Aviva: 119
Same time, same blood drop. The results are more than 15% apart. I am perfectly normal with Aviva, but with CVS, the numbers are little high.
I guess I will go with Aviva, I have had it for a couple of years. And my fasting has been pretty consistent around 90 with lab results for 3 years.