The Mobiblu device was discontinued years ago. It only supports USB2 and doesn't support larger memory cards. The radio, recording, removable battery, and head alignments features are pretty cool, it's too bad they didn't refresh it.
I reviewed the Mixxtape last year
here, it's an ok device but it has no remote, so you have to take it out of the deck every time you need to change anything. And it's not cheap. The tape goodman mentioned is the best one I've used so far - it's only $15-$40 depending on merchant, and has a remote. It accepts 8 gig cards and holds a charge for at least two hours. I reviewed this one
here.
Hope that helps