Doha British school is amazing ihv graduated from that school a week back ..
They're 2 different type of schools I belive you should visit them both and then make a choice as in visiting them physically because as to my understanding compass comes with a pretty hefty price tag as compared to DBS . DBs is hard to get into but then the prices and the teacher are just better in my opinion comparatively .. What even matter is the location where you live just to know whether your kids would be travelling for an hour or so If that's the case then it's not worth it. . Hope this helped .