Twist on connectors are okay, but they can be a pain. Crimp connectors are better, but they don't always hold as well as they should. If you want a professional looking and behaving system, forego the first two and buy these compression connectors! Nothing works better than compression connectors for BNC fittings. When applied properly, the provide a solid, tight, professional connection unmatched by any other. THis price is pretty good at about $1.20 per connector.