Lexicon Ionix U42S or PreSonus Audiobox?

[Vacuum]

Hello everybody, I'm an EDM producer whose upgrading his home studio setup. I basically produce on Logic Pro/Reason and my studio consists of an iMac with a Novation Remote 61 SL and KRK Roket 8 monitors.

I'm looking to pickup an audio interface (Has to be USB so that I can carry it around with my new Macbook for gigs) for recording vocals and an acoustic guitar ONLY.

I'm stuck between the Lexicon U42S and the PreSonus Audiobox 2x2 USB. I've heard the PreSonus and it sounds GREAT but the Lexicon is a newer product and is giving me more channels for just about $100 more so its a very tempting deal.

Please help me out here as to which will offer me better sound/recording quality and any other interfaces within $400 preferably with MIDI I/O.

Many thanks,

Cheers!

Anish.

[Vacuum]

Bump.. anyone?

[musikron]

I wouldn't trust usb to carry more than 2 channels of audio back and forth.