i think safedice is a little better just because of the house edge
also i like pD more but still house edge promises something!!
SafeDice is great! Apart from the times it gets stuck, it got only 50% of PD's or any other site's edge. Probably the lowest edge in the industry.
It also has Invest option which PD don't have.
Ability to see referrals PD don't have.
Preloaded links PD don't have.
I have a loss at PD, and profit at SafeDice.
Well so does magicbeans and a few others...
even though with profit i didn't felt house edge is 50% of PD.
Also initially there were wins but suddenly behavior got changed which i din't like, it should be stable.