If you would be ok with twins then go for a two emby transfer. If not go for a SET. I did a two emby transfer and had one. I was dissapointed at the ultrasound but thats the way it goes.
By the time you get past transfer and are in the 2ww it is really in the hands of the gods. this is how I used to think at that point anyway.
best wishes to you, THK