Hello Joanne, when it comes to good OBDII scanners that can read live data, SRS/ABS etc, you also want to look for one that can receive updates from the internet.
You also want to be able to read & then erase the ABS codes as well.
Good scanners run from $500 to $1000 dollars all the way up to many thousands of Dollars in pro rated equipment like a TechII or Snap On for instance.
You really have to spend some google search time and do your homework before purchasing any of them, and look for reviews.
I have access to a friends shop that has pro equipment and sometimes if you know someone in, or who works at a shop, it may be easier just to give them a few$ to have the vehicle scanned, than buying a good scanner yourself.
Here is one that lists at $571 for instance, that is more advanced for the right price.
In the above link, if you click on Comparison Chart, you can see the differences between models.
I am sure others may chime in to assist you as well.
I hope this information is somewhat useful.