recently upgarded to the new NAVii glucose tester. had heard good things, so Emailed to place order. had previously let fall my Code free, Homehealth replaced it for me at no charge when i Emailed to explain and make next order for strips..Great service, Guys.. Well i had heard on my forum that cidefree users could get the meter for free when ordering the strips (100 i believe) to say thank you for upgrading. Bought, deveilever in a day or two. Most happy so far. never had any real issues witht he coderfree Got me back to normal numbers with an associated diet, so well happy. But the NAVii, takes a little less blood to operate the strips, and SEEMS to be a little more accurate..numbers don't seem to fluctuate so easily. (test get a higher number then expected, so test again to be sure..phew back in range) not had that experience yet with the NAVii. Scores seem more consistent in regard to what i have eaten and in general very much on trend.