I have one and I love it. I use the locking stitch on rag quilts and never noticed a problem. As a general rule I clean out the bobbin and oil the wick after each project.
I bought the table with mine and it has a drawer that all the attachments fit in.
You will enjoy it. I never use the start stop button on it but I suppose I would if I didn't have good foot control. I love the knee lift and use it all the time.