Elektron Musical Instruments

Just ordered MD-UW.  Can't wait.

But now I need a USB-MIDI interface.  

I hate using computers to write music, so I intend to use the interface for exactly two 
purposes: 1. loading samples into the UW via C6.  2. Backing up contents of UW (and 
possibly other gear) also via C6.

I don't care about MIDI timing or anything else, I just want something that can perform 
these two functions flawlessly --- in other words I need Closed-Loop MIDI transfer to 
work.  Can I solicit your expert opinions?  What do you use, and does it work?  Which 
cheap and simple USB MIDI interface is the best?  Should I avoid any of the following:

- M-AUDIO MIDISport Uno.  50 Euros.  Widely used, but other M-AUDIO gear is shit.
- ESI MIDIMate.  35 Euros.  Korean company.  Recent product.  Anyone used this?
- Yamaha UX16.  55 Euros.
- Edirol UM1X.  50 Euros.

I have Mac OS X and WIndows XP at my disposal.

Thanks people

:: kkonkkrete ::

By the way anyone noticed why it's called C6 ?  SysEx with a Swedish accent, right ;-)