I chose this because I could easily separate a single day at a time with AM and PM together. I was replacing a pill organizer that had all the AM slots for the week together on one detachable piece, and all the PM slots on a different piece together. I accidentally mixed up the AM and PM sections a couple times and took the wrong meds, so this new pill organizer was the solution. I can take off one day at a time and easily tell my AM meds from my PM meds. The whole thing put together is kind of big, but each day segment is small enough to take with me easily. The slots are big enough to fit all the different meds I take. It's easy for me to open the slots with the push button, but it's still secure enough to keep everything contained in my pocket, purse, or suitcase. I took it on a short trip, and I liked that I could put together just the days I needed instead of the whole week. The plastic is very sturdy, and it's still like new after several months of daily use. I think it's going to last me a very long time!