We had the 5-5speed for more than 10 years and finally over heated and broke.  So we were happy to try another kitchenaid.  It does not come with kneeling hook but we can use our old one from the 5-speed.  It has a different speed change buttons so it has been a bit hard to get used to the new system.  Overall, it works just fine like our old one.  Have not noticed the extra speed and power are helping yet.  Only cons I have is that it is heavier so I get tired pretty quick. [This review was collected as part of a promotion.]