I have the 2i4 and I like it a lot.

Focusrite support is absolutely wonderful... they made me a custom driver when I told them something I wanted added!! What hardware company does that??

I did have a problem with mine, but it turned out not to be the device or the driver. It was a check-box in RealBand's ASIO settings. I'm not at my music computer now, but it has to do with real time monitoring. If you check that box, output may be very distorted.

You don't need to check it, because the Focusrite is already capable of real time monitoring without having to use PC resources. Once I unchecked that box, it sounded great!

(I like it so much I bough a second one)