IMHO, the bayonet base bulbs are better because they don't get loose. In my thread, I recommend bending the socket for screw in bulbs enough to make friction so the bulbs don't come loose. I bought some 022 switches some years ago that had the bulbs glued in. Not a good idea. Of course, if you put a diode in series with the light bulb, the life of the bulb becomes almost infinite, so gluing might not create any problems.
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