I am in the same boat. I absolutely love my Nokia Icon. I’ve run Windows 8, 8.1 and I’m now on 10. I’ve no seen a single issue and I’m about 28 months and hopefully many more to go. I dread the day I have to get a new phone.
Assuming Blackberry is still in business, I might go for them. They use Android, but they installed their patented security system on it so it’s not accessible.