I did a write up on the NHS and Diabetes care in this thread:
http://talk.uk-yankee.com/index.php?topic=90257.msg1168544#msg1168544In the US, it seems to be like anything, "How good is your health insurance"?
The cost of insulin is going up and up. And deductibles are getting sky high,with many people having to pay tons of money for co-pays for Diabetes supplies, appointments, etc.
Some technology is behind in the US (not FDA approved), but the NHS often doesn't pay for these things anyways. There are a lot of groups out there that show CGM in the Cloud and Loop (artificial DIY pancreas), if you have cash to pump out on these things.
Disclaimer that I don't have Diabetes myself (since you were asking for personal experience), but I am a current Children With Diabetes Friends for Life Staff Member, and a former Diabetes UK volunteer.