We like #141 a lot. It's simple and clean and translates well onto other mediums. Some different colors combinations would be helpful. Adding some depth would be nice to see too. Nice work!
I like the blocks in #146, kinda of like building blocks which represents some of what we do. I think the two block on the right are too hard to make out being the same color. Some brighter colors might be helpful for us to see as well.