When I bought my Janome 4900 a few years ago I took one look at the plastic foot pedal and asked the dealer if I could get a nice solid metal one instead. They said it was a downgrade but they'd do it for me. I don't regret it one bit. I love my metal foot pedal and would not change it for anything.
It still likes to take a tour of the carpet under the table sometimes but not so often now that it's on a piece of rubbery vinyl.