Well with my first pregnancy I saw the same lady each time and that was nice she wasn't very personable though but she would get a little happy and excited with me when getting to see things but for the most part she would just go through and I really would have liked to be pointed out things even if it may not seem like a big deal.
Now with my new Dr I had to go to a new place and with my second miscarriage I saw one girl who was very nice and I could tell she wanted to just give me a hug and tell me what was going on but because she wasn't a dr she couldn't tell me anything. But when I came back pregnant with J, she was the tech that day and she remembered me from the months prior and she was so sweet with saying how sorry she was that she couldn't tell me the baby at the time had no heart beat but she was genuinely so excited that I was back and this time with a healthy baby. So she sat and we went over every little thing together and she tried to get as many pictures as she could. And it was just really nice.
I had a TON of ultrasounds. At least 1 every two weeks and often times they were long ultrasounds to do lots and lots of measurements of me and the baby. I think what I liked about the ultrasound techs were that they were telling me what they were doing and what they were seeing. I also liked that they were friendly, and when it was kinda quiet in the room they were open to making small conversation (talking about the sounders, etc). I also liked that when I did ask questions I wasn't treated like an idiot. I know SHE knows exactly what she's looking at but to me (at least early in the pregnancy), I'm looking at a snowy TV screen from 1983.
I liked the ones who explained everything they were seeing and measuring. It was also nice when they seemed genuinely happy for us. And of course a few cute pictures were always appreciated.