Are non-electric cold-water bidet attachments good enough, or do I need a heated electric seat?

Across the reviewers we read, non-electric attachments like the LUXE NEO and SAMODRA win on price, easy installation, and reliability, and most verified-purchase reviewers say cold water is fine year-round. If you live somewhere with cold winters or want warm-water comfort and a dryer, specialist-community consensus favors a heated electric seat such as the TOTO C5 or Bio Bidet BB2000, accepting the higher price and the need for a nearby outlet.