I bought a pair of these and actually dislike them. No question the quality is good but a by far prefer the Irwin design that is a ratchet. You open them all the way with the button then push them forwards around the fitting until it's right. I find having to hold the button on the knipex fiddly by comparison and the Irwin button is bigger and easier to use.
I also bought one of the pliers wrenches at the same time. People seem to rave about them and I thought it would be a revolutionary tool that would be in constant use. It is a useful additional tool but nowhere near as universal as people make out. They have such a limited range of movement, again would improve by ratcheting, and they are quite bulky for what they are. And I think the internet gave me to high an expectation.
The high leverage side cutters and the high leverage combination pliers are my favourite thing they make.
Stilsons ... stil-ies are always cheaper than the pipe wrench type and narrower jaws if space is tight
