well, its too late for this, but i will put my 2 cents to this discussion.....
i have an apogee duet2, and i also worked on a babyface rme, i have to say, there are both very good, minor diffrences thu........
sound wise, i liked the duet2 sound better....why? well.....its more close to natural.....and it has that apogee soul to it
the baby face have midi inputs, while duet2 dont, on the other hand, the duet 2 have more 10db volume
the baby face can work on a pc and on a mac, the duet2 only mac, but its not less good, in fact its great, cuz apogee and mac worked together on this, so the compatibility is more stable.......
the babyface's software has more functions in it, which makes it a little bit hard to maneuver with it, the duet2 maestro software is much more easy to handle, gives u more time on creativity, and less with just routing and pluging, duet have more easy handleing as the touch screen is great and fast and easy, by the way, the babyface's break out cable is wayyyyy to tangley than the new duet2,,,,wayyyyy more....i like the duet2 breakout cable more....
display wise....man...there is no compresence....duet2 has an "oled" amazing display, colored, interasting, looks amazing, while the babyface has 2 led boring metters that just go up and down, the cover of the duet2 is amazing too...when u shut it off, u can just see the main knob, nothing else, as for the babyface, too much bottons, duet2...elegant hard black glass with aluminum caseing, looks amazing, babyface.....looks like some cheap toy that u buy in wallmart ( under the belt diss 😉 )
the babyface is a tad more expencive ( i think its not worth the 100$ more ), now....as for the ad/da converters, they are both great, we are talking high end sound in 2 channel mixing, both are kings of the 500-700$ realm interfaces, even beyond, so now its just a matter of who u like more, design wise, look wise, easy handeling wise, and compatibility wise, i did my reaserch couple of months ago, and ended up with the duet2, and loving every minute of it....on the other hand, i have a friend with a babyface....and he is loving it too, we are always fighting on which interface is better lol, well u know its like bmw and mercades, both are great and both have faithfull fans that defend them cuz they love the product.....so.....go for the brand u like, they are both great, u cant go wrong with any one of them......as u see....i tend to push a little more with apogee, cuz the ad/da converters of the duet2, came stright from their flag machine, the symphony, gotta love that.