Though I don't currently use a dust cover on my Tyros, I like Donny's 'Cover Your Ax' suggestion (vs the Yamaha brand one) because it includes elastic to secure it (right?). I suspect Yamaha's cover doesn't include elastic, does it? On the other hand, the Yamaha covers are customed sized to fit specific Yamaha keyboard models. Ok, if I go with a 'Cover Your Ax', exactly which size (small, medium, long slim, large, extra large, extra slim) BEST fits the Tyros dimensions (44.88" x 16.85" x 5.40")?

Scott