With the dog ages ago, I superglued the ID and rabies tags back-to-back so they wouldn't jangle and drive me 100% insane.
With the current cats, since they live outdoors, I have tried collars and tags many times. And many times, both Freakshow and Archie have lost the collars in the woods in less than 24 hours. I now just leave them collarless, keep the tags indoors where I can find them if necessary, and hope for the best. However, since we are rural and you so are not, I recommend you leave collars on your cats, if they will already wear them without complaint.