I may be purchasing one of these in a year or two & wanted some feedback from people who have owned both. Is there a considerable amount of difference in performance? And is there a considerable amount of difference in fuel mileage? I have heard the Aisin, that comes with the HO, needs to be serviced more often. If they are running the sale on HO's like they are now when I purchase, it's almost a no brainer to go that route.