http://www.emagic.de/english/products/hardware/amt8_u8_3.html

As Logic Audio comes from E-magic as well, this might be a good choice for you.
I don't know where you're located, but in Europe the E-magic was the best priced.
Originally I wanted the Motu, but there are no windows drivers available yet and it was more expensive in Europe.

For your info;
Allthough it is not advertised on the webpages of E-Magic , the ATM8 works perfect with my CWPA 8 ! As long as you have the instrument patches for your midi gear, you can load them all at the same time and set up each track for each instrument.
I guess they don't advertise this as they want to sell Logic Audio.

If you need smpt and video sync. you will have to go for the Unitor II

Fred