First: what is in the formulary for your prescription plan, and at what level of coverage? Is it 100% covered as needed, is there a co-pay but covered as needed, or do you need to spend out-of-pocket to supplement what is covered by insurance? (Also, what is the co-pay, for how many strips?)
If all of your strips are covered, with no co-pay, then first check the brands, then check the models on each brand. You may need to keep a log book with the times of your meals to compare.
If you cannot find strips that are covered and have to pay out-of-pocket regardless, look for models that are not from the big-five (Roche/Accu-Chek, Lifescan/One Touch, Abbott/Freestyle, Bayer, BD) that have the features and software you are interested in.
The Bayer Contour2 and the Wavesense Presto both advertise meal-marker capabilities on the device. The Wavesense Keynote has time-of-day averages that are apparently limited to “breakfast, lunch, dinner, bedtime”. No pre-prandial/post-prandial splits or other times of day.
One way of doing further checking is to go on the site of a mail-order diabetes-supply house such as American Diabetes Wholesale or Hocks, check out the unknown brands, and check the manufacturers’ web sites for more information. Again, this is going to be more useful if you are paying out-of-pocket than if you are completely covered.
Another option your doctor might have set up, or might choose to set up, is one where you can upload your meter readings to your computer, add the appropriate comments (i.e., pre-breakfast; had 6 oz fat-free plain yogurt and two scrambled egg-whites), and then submit the data to the system at his office.