Sound Devices makes high end field production audio gear used mostly in the broadcast and film industries. And now it looks as though they have one of the best portable stereo audio interfaces.
The Cloudlifter is a handy tool that will add a clean gain boost to your signal. This is handy with dynamic mics that are gain hogs, and especially when using a preamp whose characteristics you are trying to avoid.
The MOTU Microbook II looks like a handy tool (and inexpensive) for a recording setup where you need more than 2 inputs. I would probably use this in addition to a stereo preamp.