Drips take forever to use. Although they are much more cost effective, I'm not going to test my water once, or more, a week on all 10 of my tanks if I have to use drips. Strips are good to get a feel for where things are at. Ideally I want controllers for Ammonia and Nitrates.
I only use the strips for normal routine testing. I donb't need the high level accurate answer, just the quick convenient one. If you ever spill the bottle on carpeting or in your tank, you may find the strips to be much cheaper!