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You don't get a spare lithium battery with an iPhone either. In fact, you can't just change it out every day either. And yet they sell millions of them, and they do what they're supposed to do.
Been using an Ion for about a month nothing bad to say about it
The Icegator with a Nils auger cuts circles around the Ion. No pun intended... My buddy has just got the ION and my gator out cut him 3holes -1. The gator cut no less than 70 holes today in 6-8 inches of ice. The battery and head are in their 4th season without change or sharpening. Love it.
Can you put a 10in on the ion ?
I've used them both and the weight difference alone made up my mind... 22lbs vs 33 is a huge difference. I got 97 holes through 8" and fell in love with the ION. They are getting very hard to find now. I have 3 due in on Wednesday and one is already sold. Here is a quick video from my test drive: https://www.youtube.com/watch?v=ngA5Da7_56A