Sorry, but I've no experience of either... but I do know that Alesis kit is excellent - in fact, I'm going to buy one of the HD24 ADAT 24 channel 24 bit hard disk based units, having seen one in use.

In my experience any of the 'names' are able to provide good S/N ratio with modern technology. Okay, sometimes Behringer stuff is faulty straight out of the box, but they don't usually fail in use unless you do summat daft!

I've just bought a Behringer XENIX 1204 which comes with a USB 'soundcard' with stereo in and out on RCA Phono plugs. Okay, that goes back to the original difficulty of mixing everything down to two channels, but it's fine for the purpose I need it for. I already have a Soundcraft Folio Notepad (and the PowerPad version), and the Behringer is streets ahead on specification, for slightly less money.

Admittedly being in the trade gives me an advantage...!