All these schools mentioned are very good. It really depends on your priorities or constraints.
I would caution you though against pinning your choice on "first impressions".
Everybody as in everybody from my grandmother and grandaunts all the way down to my nieces and daughter... all went and/or go to Assumption. Assumption Herran for the older generations; then Assumption SLV (San Lorenzo Village, Makati; never to Assumption Antipolo.) The same picture holds true mostly for the family and relatives of my husband.
Regardless of where we reside, we all go to AC San Lo. (We reside in Greenhills East, and the head office of oru business is in Tektite; so Poveda is just a matter of crossing EDSA; & ICA, a few blocks down Madison/Wilson... so AC San Lo is a stretch.. but there, our daughter goes off everyday.)
Why are we such die-hards? We believe in the values taught at Assumption; and the way the HS grads turn out. Plus, we have great faith that once High School is done with ... we will easily get into any college here or abroad, whatever we choose. (That is another thing, nobody goes to Assumption - College Dept.