I have the new Strikemaster 1200DP electric, 8 inch, and I absolutely love it. The ice has only been about 8 inches thick, but I was out the other day and drilled about 40 holes, and it still had plenty of juice. I have no doubt it would perform just fine in thick ice, the obvious advantage is that if the battery does go dead, you can hook it up to your truck, atv, or snowmobile battery, and if you're on thick ice, I doubt you'll be walking anyway.