we had fixed ours when the interests rates were on the way up 1.5 year ago. Luckily, it is only for 2 years as the interest rates have come down soooo much since and we are kicking ourselves as we are paying so much more. Once the fixed periods end, depending on the rates we might fix again. I think fixing is good as you know the amount due but then if interest rates go down, then it totally sucks

GL