I think I would prefer a Janome that can be worked on at my LQS, over a Kenmore that would need to go through Sears.
On the other hand if you are going to have it serviced regularly you might want a Kenmore that you could purchase a service agreement on. I did this with my Brother Disney machine because I want it serviced regularly and it did save me money when it is about $70 at the dealer just for a regular service.