On the other hand I know I'm prone to placebo effect, especally when I've paid a lot of money for something. Thus the testing. Not saying it's your case too, though. Just pointing out.
Funny that you mention this.
During my search for a new unit I found several voting topics of what is the best DAC etc.
For example in one topic of a few a guy uploaded two samples called sample A and sample B. One of the unit cost 3000 euro's while the other cost around 750 euro. He let the vote run for about a month and 73% voted for sample A. During the voting there were a lot of replies and between them professional audio mastering engineers who do jobs for (big) artists. Anyway as far as I could tell they all voted for sample A and writing that this is the most expensive unit as it's more transparant and better highs etc.
After a month the guy closed the poll and said that sample A was the unit of 750 euro.
A lot of people were in shock..
Anyway.. I'm now deciding between Tascam UH-7000 or the Audient ID22.
I was thinking about SPL Crimson too but I read more negative about it than with above two.