[Cheesehead]

This is an interesting thread, it clearly shows the strengths of HDX in a recording situation. I totally agree having owned HDX, you can record through the software with no problematic latency at all, drop ins, headphone mixes are super tight etc etc. It just works.

However in in a purely 'post' situation, Native offers massively more bang for the buck on a modern fast computer than HDX, whether its HD Native or just using core audio.
Its not always down to voices either. Sessions can be not necessarily large in voices, but large in processing.

Offloading some processing to a card doesn't seemingly always give you more processing power these days.
The to and fro from the card to the cpu eats up resources.