I can't imagine anyone has gone through enough of these to tell you which is best. It seems to me that most work well. There are a few with narrower range for aquariums and may be easier to read for people with bad vision but the full scale works fine for me. I might have gone digital if vision or lighting was a factor. Some come with a protective case or bag. A calibration lock screw and appropriate units are probably the most important features that are missing on some. Beyond that, finding one with lots of good reviews may mean it will survive rough handling better.
Mine is a Vee Gee which has always worked well but does require decent light. Direct, bright, full spectrum light from a point source like the sun or a flood light is required. I have never dropped it but it is probably of similar durability to an unprotected cell phone.
I was surprised how much stores tanks can vary. It is definitely worth checking and adding extra acclimation time for a mismatch.