Some choices are confusing.
#1 Yes, I wouldn't buy speakers with out grills, No, I don't use grills all the time.
#4 ...just don't use the grills.
So, it comes down to 50/50. Some want grills and can remove them. Some don't care if they had grills or not.
Anywho, I voted #2. I would not take the chance of my kids or visitors poking at my cones.
If you do have grills, use magnets.