Hi OP, any chance you are on MONA? If not, I recommend joining if you are able and asking there as there will be a lot of information and responses. I've looked at a lot of the daycare around here and never heard of A+ Kids. Not sure if that means anything but I just looked it up and am surprised I haven't. Clarendon Child Development Center is incredibly well regarded and I've only heard wonderful things from other parents, but they only start at age 2.5 and have a very long waitlist. If you want to consider it for preschool, get on the list now. I don't think I've heard anything negative about Arlington Children's Center. I've heard some not great things about Merit Schools (some on this board) but also seen some parents post that they are happy there so may be good to get reviews from the exact center from current parents. That is something that MONA is helpful with.
FWIW we started with my infant in a center and moved to a home daycare and preferred that setting for the infant up until preschool years so that's an option to consider too.