I've had the FW810S and can heartily disrecommend Lexicon audio interfaces. The Pantheon plug has done nothing but create zips and pops for me. The core audio driver is half-baked, switching to the unit with Safari open means audio coming out of flash will sound like it's losing sync until you quit and restart Safari. The MIDI interface sometimes magically disappears until you rescan manually. And Harman's support is just horrible. I had to edit my support request at some point because their form silently dropped questions that contained the word 'dropout'. It's a $700 door stop now. Can't even seem to get it sold for $300. On the plus side, I'm happy with my Ensemble now.