I have seen Posi-lock joiners in use and the people who used them swear by them, they are quick easy and just about fool-proof, I'd use them. Crimping is easy, I agree, but only if you have the right tools, enough space in which to use them correctly and the know-how to make good crimps first time, cause they aren't reuseable, and if they aren't 100% right then they will fall apart just when you need them to work.