My biggest problem is not threading the needle, but putting the needle in. I just can't seem to see the hole well enough to get it lined up correctly. My husband is able to do the trick of putting pin in the needle hole to see if it's correct, but I struggle with it.
I hate changing the needle, and know I don't change it as often as I should because I have such a hard time getting it in correctly.
My Juki industrial also has round needles, but I can get my nose a lot closer and have better lighting, plus that one the hole goes left right instead of front back and that seems to be easier for me to line up.