If the answer to the first question is "no", then maybe you should go with fixed rate unless you can predict the future and see rate cuts coming down the pipe. If the answer to the first question is "yes", then probably stay variable unless you can predict the future and see rate hikes coming down the pipe.
Personally, I've gone with 5-year fixed terms every time since 2003, and every time except the last time it was the "wrong" choice. But the last time, it was so much the "right" choice that I looked like a wizard (I'm currently at 2.54%).
@therev23 If you switch, you save $25,652 within 2 years and 11 months. (This is napkin calculations so do your own math.) If your switching cost is less than that, you should def switch.