My ins (Medicare) allows for a replacement every 2 years, As long as you're confident with the readings, I don't see the need to replace every 6 mos. Some have a limited date range(year), so that might affect your decision.

The sender units you attached to your arm are very expensive, otherwise it seems a good idea. "Not available on the NHS". Realise you would be paying out a lot of money just to avoid a little prick a few times a day. ( no pun intended ).

that is something I was just wondering also.

I read that the latest tech has a model where you don't need to prick your finger..!!

My meter just reads the blood sugar level, time and date. In the past I've had a meter that let you add notes to your readings like "before a meal" or "after a meal". I'm sure as technology improves there are many more meters out there that can do different things. I once saw a talking meter that told your blood sugar level. I would look at the different meters or the Libre System where you scan the device on your arm.