I have a professional Lincat double fryer in the garage that we use to use for our weekly fish and chips. I have reasonably high standards
To be absolutely honest the McCain chips are so good, i no longer bother. preparing them myself. I do however do roast potatos in them by parboiling and covering them in olive oil, and airfrying.
The McCains French Fries are identical to MacDonalds Fries and taste like they have just been fried and put under the lamp in the strainer for a few moments. You cannot tell they are not fried.
The art when using the air fryer is to pretty much finish the rest of the meal and hold and do the fries. Time the meal around the fries as a minute each way is either soft or too crisp.
Before you go through any palaver I suggest you try an Airfryer. I have two Phillips in our main home and one in our beach home and they are used every day.
Good luck.
EDITED: If you look back through "eating today" thread - all my pictures showing chips are McCains via the Philips Airfryer. They are of course also very much more healthy .... We also use some fatter McCains Home chips when we fancy a change and keep a couple of bags of each in the freezer.