You’ll want the one that attaches to the seat. Luxe makes really solid ones for very cheap; I’ve had mine for three or four years now, and it still works just fine. You can get some fancy ones with heated water, air dryer, etc but that’s all superfluous; The cold water alone isn’t bad after you experience it once and know what to expect. And the nozzle on Luxe brand bidets has a self-clean feature, so you can rinse the nozzle easily.
You’ll want the one that attaches to the seat. Luxe makes really solid ones for very cheap; I’ve had mine for three or four years now, and it still works just fine. You can get some fancy ones with heated water, air dryer, etc but that’s all superfluous; The cold water alone isn’t bad after you experience it once and know what to expect. And the nozzle on Luxe brand bidets has a self-clean feature, so you can rinse the nozzle easily.