Ice in my driveway is also a big time problem for me, I have a long driveway like you and is glare ice, I walk it every day, without those ice grips I would be slipping and sliding all over the place with a good chance of taking a tumble.
I believe I purchased my current ice grips from Amazon, there are several different styles of all different prices and they all work, the big difference I have found is longevity. The ones with studs and spring type grips fell apart after a short while, these chain type I have now have been going strong for 5 or 6 years and are still holding up fine.
Al