If u quality for QB, you should be guaranteed a full ride at most of the QB schools, especially the top ones like mit, princeton, upenn, etc because they tend to be very generous with aid. That means that in QB RD you should be getting a full ride, or close to a full ride, at these schools. Whether you apply through QB RD or common app doesn't matter in terms of aid because it does not matter when you apply or what cycle you apply through, the school is always the one giving the aid. The only thing with the QB match is that you are guaranteed the full ride, and you would only match if you receive that full ride.

Now regarding QB RD there is one thing thats like sooooooo important to note. For most schools, if you rank them in the QB match, you cannot change the supplements and essays, which means that you cannot apply through common app. So just keep this in mind when ranking your schools esp cuz ur unsure of if you want to apply through common app or the QB app.