I hate the 8 inputs configuration you find in most interfaces, the only time I need more than 2/3 channels is when recording a drum set, and 8 in's doesn't cut it for the most common drum sets. I will rarelly need 16 channels (which is the next step for converters).
Having said that - I'm looking forward to purchase an Orpheus. Using the 2 digital spdif/AES inputs to receive the output of a, say, Neve 1073 DPD

or an API A2D

I get 10 inputs, 8 of them through Prism converters. I already own a handmade dual tube pre, so I'm thinking of purchasing a pair of different coloured pre's (a Germanium and a Millennia Origin

) besides those Neve-API and relying on the 4 prism pre's the Orpheus provides (I'm sure they will be much nicer than the ones on my Mackie Onyx). I'm sure this setup will be enough for me for a lot of time, I work mainly in my own project studio and do a lot of location recording, so a FW interface perfectly fits my needs. On the otherside, puting all this gear together means a lot of money, so I don't think it's going to be a short term investment.
I'm not being paid by Prism

, I just wanted to show my excitement about this item. It would be nice to read a review by a real user. If someone figured out the kind of setup I'm looking for (high-end conversion, at least 10 channels, FW if possible) and knows of an alternative solution, I'll be happy to check.