Best oil for fries, best oil for fryer ?

peanut oil.

corn oil, peanut oil, soybean oil, any of the them deep fry very well.

For flavour Bacon fat , for health safflower.

Sun flower Oil is tasteless and very light it is way better than vegetable oil / canola oil
my husband used to suffer stomach upset whenever eating anything fried he may not sleep that day
after changing to sunflower oil he is able to eat fried stuff and not suffer just the normal feeling after eating fried food

Depends on what you call 'fryer'. If for deep frying, use peanut oil as it has the highest smoke point. If just frying in a pan, use vegetable of some other 'neutral' oil. Neutral oil is oil that does not impart flavor into the food being cooked.

Peanut

Sun flower Oil is tasteless and very light it is way better than vegetable oil / canola oil
my husband used to suffer stomach upset whenever eating anything fried he may not sleep that day
after changing to sunflower oil he is able to eat fried stuff and not suffer just the normal feeling after eating fried food

Peanut oil.

Vegetable oil, Canola, Corn oil.

Never heard of colza oil