hmmm, true true, I think we are in about the same situation The r10 is def on my radar for a totl dap, but have you thought about the hm901 w/ balanced card? Hearing from others on the 901 thread, it is the best dap sq wise so far. The problem is that no one has compared the 901 to the r10 yet, this is tough because all these things are $$$ and I need to pick wisely.
Would not get the R10 if you listen to IEMs with an 8 ohm output impedance. That really blows.
The balanced and IEM 901 cards are like 1-2 ohms.