I also preferred being paired with more advanced people for the same reason. I'm faster than I look, so I like being with the advanced people to help work on my speed even more. I also find that I tend to learn faster than most people, so when I took Judo for a while, I ended up sparring against the more advanced people because I'd beat the other white belts too easily and didn't feel I was learning enough.
I'm a guy. Luckily I've sparred enough to learn how to use my lack of height to my advantage. I simply walk taller opponents down, corner them against a wall and start unloading. I've ended up with a minor shiner once because one of the instructors and I just started throwing big shots at each other.