It is difficult to know your exact needs so I will say that if you want the most accurate I woudl chose a contour. I love my contour meter. However, you may not need that level of accuracy for what you need. I am a big fan of of the Abott Freestyle Libre’ for trends which might be more important than actual numbers for your purpose. Often tends are far more useful. The freestyle is a pretty inexpensive 14 day device that is usually a bit off my countour when I have to wear it. There is also a freestyle meter and that might work, however I have never used one.
If you doctor is a regular endocrinologist they may have access to a Medtronic product.
The I-Pro is a doctor tool that can be used to track blood sugars for a brief period I doubt this would work in your case, but it might. This is likely the least expensive option.
Finally, I understand Walgreen is starting to carry Dexcom products and while it might be the most expensive option, this might be the best 7 day wear process.
Note: I am a Medtronic ambassador. My opinions are my own. They did not pay me to say nice things about Medtronic devices or the company. In fact, they do not pay me at all. OK, they sent me a shirt and a cup but even I am more expensive than that.