Following the suggestions of several well-seasoned bros here, I tried the Mickey Mouse Bak Kut Teh one year ago.
Sure, the quality of meat has nothing to do with the most popular place in Nagoya Hill street food, where meat is something of dubious substance (small pieces, all with same taste).
What I did not like was to see that they were cutting fresh meat and then boiling it for just few seconds in the big pot. I am sure this is the best way to preserve taste and probably follows the traditional recipe, but I felt somehow concerned about hygiene: in case some meat was not 100% healthy, contamined with bacteria or had parasites, such a short boiling cannot sanitize it. Anyway, neither me or any bro here ever had health problems, so that means it's ok.
Personally, I like more the strong taste with soya sauce of the black bak kut teh in Nagoya Hill, rather than the "white" versions, but definitely the meat at Mickey Mouse is of another (upper) category. Opinion of a westerner who is NOT expert of hokkien food, but just likes to try and enjoy the variety of good food in all the world.
PS: there is another reason why, if want to eat bak kut teh, I prefer to go to Nagoya Hill: the girls that walk around

I am always mesmerized by those beauties who walk back and forth after shopping, choosing where to eat. That's a plus, which Mickey Mouse does not have