I am thinking of getting a meter for my new gt and I know there has been post on this before but would like a new updates on my Questions. Also my hearing is not so good have to ware hearing adds booth ears. I would like to know what you actual users and experience that you all have used them. 1. your thoughts are they worth the money. 2. are they helpful with the gt 3. Where can I buy one other then eBay if you know someone who has one for sale and what should the cost. Thank you for all your help.