I have the ifusion speakers, they're mad chill.
As for the iPod, you're not going to find anything that goes on top. So basically, you have two options.
1) You could either try to find something that has a port on both the top and bottom so that the base could be connected at the same time (though I've never seen something like this)
2) Those speakers have a line out on the side and even come with a connecting cable. So just connect the iPod through the line in and attach the remote base to the bottom of the iPod.
Also, for the remote, there's this thing called the iJet Two-way that has a screen that displays the song title. I don't know if that's important to you, but I know that I would enjoy it. I haven't seen any others like it, but this one also hasn't come out yet.