She's shopping for a blood glucose meter and asked me which meter has the most features. She's a techie and loves gadgets; while I don't know anything about that sort of thing.
If there are meters which add truly useful features which separate them from others on the market, I am not familiar with them. However, I haven't actually been looking either.
The features I've seen are mostly a large amount of room to store previous test results and having the meter calculate various averages of those BG results in different ways. I never really ever put those features on a meter to any good use, but perhaps they are valuable to others and/or your friend.
Before your friend buys a meter I suggest that it's important to know both what her insurance will cover and what her doctor(s) might recommend. The insurance because, as you realize, unless your friend is independently wealthy (enough) test strips can run into money. Her doctor because if the doctor has some "pet" system which he'd prefer to use then he'll probably just try to steer her in that direction later anyway. (That's how one accumulates obsolete BG meters in your "junk drawer".)
I'll be curious to see what others have to say. You should not spend a lot for a meter. By that I mean the manufacturers often will give the meter away for free to a person who tests "often enough". They expect to make the money back when the strips are purchased.
I've got 11 BG meters laying around the house counting duplicates. And that's after having thrown some away. I certainly did not pay for more than a few of them at most. And the prices of those I "bought" were also artifically low.