Sound card with multiple outs and Pianoteq?

I have a Focusrite 18i6, much the same model except more inputs, and it's routing capabilities are all right: each output can be assigned individually to anything you want. Only restriction: the 6 outputs are different: stereo balanced analog (monitor) on 2 TRS jacks, stereo unbalanced analog (headphones) on a stereo jack, and a stereo digital (S/PDIF coaxial). So you need at least another DA converter with an S/PDIF input and you have to make the appropriate cabling to get your 6 channels. Otherwise, it's a very good interface. But maybe you'd want to investigate further to find another one with individual, but identical outputs...

Regarding the Focusrite I confirm 100% that you can assign a separate, individual signal to each output. As I wrote though, the physical specs of each pair are different, so the cabling aspect can be challenging, including the necessity to get a S/PDIF DA converter...
Most MOTU interfaces will do the same, (I have the 896) but here it's the software part that can be tricky: their "Cuemix" is far from being simple... You have to create several mixes and assign them to the different outputs, but when it's done (and saved!), you're OK. With Focusrite it's a simple matter of choosing this or this DAW output (= Pianoteq output) and route it to each physical output and it's done.
Needless to say, you need ASIO...
About Tascam: no need to look at their interfaces, you won't find more than 4 individual outs.
About Presonus: only the 1818 VSL should do the job, but the caveat is the same as for MOTU.

Edit: about the Focursrite 6i6, there is a major difference with mine: the 4  line ouputs are identical to the 2 headphone outputs, but there is still the S/PDIF that should act as "5-6".

In the spirit of looking over some of the possibilities, yesterday, I ran across the Apogee Quartet sound card.  Six balanced outs. Four inputs. But expensive: Over $1200 US. Below are links to two positive reviews:

The SOS review:
http://www.soundonsound.com/sos/nov12/a...uartet.htm

The American Songwriter review: http://www.americansongwriter.com/2013/...top-audio/

Looks good, but I'm still leaning towards the Focusrite 6i6. Largely because it's 1K less expensive. But are there other cards that are closer to the Focusrite in price while still offering multiple outs that can send different signals?

I have now the 6i6 for about a week, it compares to the EMU0404USB just OK sound-wise.

(The EMU had a smoother and at the same time bigger sound. But after the initial disappointment
playability with PT seems now is favoring the 6i6 .)

I have tried to use PT Recording with 5 mics & Stereo Speaker outs (one the Genelecs and the second of the CA65 inputs) - but got no better results than with a stereo out to both sound systems.

But I need definitely more time to make more experiments.