1. There is a new study on ultrasound and mice fetuses, indicating ultrasound may affect brain development. I know it was on mice, and the study indicated more study is needed and that we should not give up on all ultrasounds, but has anyone else heard of such findings?
2. If any one else is using them out there, do you have model recommendations? Is there like a cell-phone rating scheme - showing the one the has the highest radiation, but the most features or the best reception?

Please let me know, and help calm a nervous father-to-be.
Thanks