Phantos were scary! Now they just increase adrenaline... not even, once you learn that throwing the key on the ground will make them disappear until you pick the key up again. I guess I like SMB2US better, because it introduced new things, like all those new enemies that still appear, like shy guys and birdos. SMB2J was alright, but it didn't offer much more than SMB. It was more challenging, but as far as fun goes... it's a little less fun to me than SMB2US. I also love both underground themes.