Our 2000 Burro
was plumbed with PEX, but the fittings are FlairIt brand. The only tools necessary are a utility knife, and a source of heat to soften the pipe (flame from a cooktop lighter is usable, but a heat gun is better and safer. They also make a little tool which grips the serrated screw-on fitting caps. It is cheap and very useful.
In the years I have modified the plumbing I have never had a leak, and the fittings work right the first time. A wide range of fittings are available, and my local hardware store has it. When I read about the other types of fittings I am grateful that the Burro
came with this type