I just bought the tl 2200 qvvp mini, which is essentially the same machine. I love it so far. Maybe they have resolved the walking foot issue with the mini because mine works fine. The only problem it had was the set screw that holds my needle in place came loose after using the walking foot, causing my needle to fall out which bent it (the needle). Possibly the screw wasn't screwed in tightly from the factory.
I don't think you will be sorry.