My old stuff seems to have oxidised over the years so the contact isn't very good, this results in the cars stopping all the time (even with new brushes), the set I went for is 1:43, so the track doesn't take up too much space. I'm sure modern scaletrix is just as good, it's just my old set wasn't very good. My dad said he'll try to clean it, but I guess the track is chromed steel and it might be the chrome that's rubbed off which is allowing the metal underneath to oxidise, so him cleaning it will be temporary at best. My son does love batman, and they do a set but I don't think it's current which makes it expensive. This set was only 30 quid but is a figure of 8 so good to dip our toes in so to speak.