I'm a happy user of Minidsp 4x10HD, and Tom Christiansen thinks it OK as well. As well recommended by late SL himself.
In-depth review and performance measurements of the MiniDSP 4x10HD.
neurochrome.com
Yes this lacks Dirac, but is it really needed? My guess is that user is capable of making room measurements and EQ settings "manually"
DDRC-88A with BM plug-in would be my choice if I wanted Dirac.