We all have so many individual likes and dislikes...
I really like having the knee lift for the foot up/down on my Bernina -- my friend who owned the machine for 5 years before me never used it!
So for me, it would be the Janome, and it looks like it has a higher throat than the other one as well. If you are going to be quilting on it, the extra height will make it easier.
The other consideration I would look at is the bobbins, I've found I really like buying prewound bobbins. My Bernina has a proprietary bobbin that won't allow me to do that.