I love Planet (liquid) detergent! I bought it at Whole Foods, but I think you can get it online through some of the online CD shops.
No diaper rash, and no stink! Evan's BG 3.0s used to stink horribly (strong ammonia smell), but we don't have that anymore.

Re: CD detergent rave
Joseph Henry was born at home on March 9, 2009
Nora Mae was born at home on October 30, 2011
I had done two rounds of my washing and drying routine...added a squirt of Dawn in the first round. I also use the Calgon water softener with each load.
Since then I've gone through 3 loads of CD laundry using Planet, and I still have no stink issues...so hopefully, this works (keeping finger crossed).
TTC #2 since 9/09 --- mild PCOS; Endometriosis
IUI x4 = BFN
IVF = sometime in 2012
OMG this might be my answer!!
Are you still using Calgon? Do you wash everything in Planet or just the CDs?
j+k+m+e | running with needles