Finchy, not gonna start a shoot out between the H1xx and h3xx series but my overall feeling is that the H1xx beats the H3xx series hands down since it has the optical-in, it is THE choice for anyone seriously recording (outboard AD). If you look at what used units go for, I think you will agree. I have already noticed the used price point creeping up since preglow's SPDIF patch was committed.
When you decide to upgrade your gear, you are stuck with your H3xx analog section and AD, the H1xx does not limit you to it's own AD, you just go and score a modSBM and start to enter a completey different world of field recording...the transistion is dramatic.