Before I had my cataracts removed, size was about the most important thing. I couldn't see anything on a 3.5" or 4" screen.
Now that I have 20/15 vision, I think I'd rather have a Note-type phone (with my fat fingers, I need the pen) with enough internal storage, an external SD card slot and a removable battery in a much smaller case. My Samsung Precedent slips into a pants pocket easily, and I don't have to worry about breaking it when I sit.
Leebut, I use an Otterbox defender on my Note 3. It slips into a very strong belt holster and the phone is held very tightly. (It takes a little learning to be able to release the phone easily. My pants would fall off easier than the phone would fall out of the holster. And after having a few accidents with the phone, in which there was absolutely no damage, I don't want a phone without one. I've always preferred holsters since they were available (early in the century, I think), but the Defender is about the best I've had, and the case seems as it can take anything but being driven over by a car (or water - it's not waterproof).
I'm half way through my cataract surgery - one done last week, one to go. They did the bad one first of course, so no longer straining to read the screen. Used to be I couldn't take the eyestrain after about 10 minutes, and I agree that now that I can use it more a larger screen might be handy.