Laughingduck I've always been told the angel sounds isn't as good as the sonoline but I have no true experience ... I've only used sonoline and found dd at 10 weeks (when I bought it), but most drs will tell you they won't try before 12 weeks and even then it's hit or miss.. so many things effect it, weight , full/empty bladder, just eaten/drink, position of placenta...
I plan to try at 9 weeks this time I think or maybe not!