I have a POTS, and will until they retire the system, if ever. Cheap insurance of sorts.

My wired handset is in the bedroom, all other POTS handsets in the house are wireless and will go out when the power fails. The wired handset is in the bedroom, with a heavy rubber band holding the handset in the cradle - in the event of an EQ, this will keep it from coming loose, and tying up the line. When I want to try to make a call, I just remove the rubber band.