I read reviews and checked measurements before ordering and this Review is soon after the PURCHASE - installation will be in a few months.I have all terminations that this Pex installation will require and I have checked fit. Someone wrote a review based on a Crimp Connection but I chose a Clamp connection and found that all connections will be a very good fit.The quality and value of the purchase both appear to be excellent. Oxygen Barrier is important and aluminum Pex tubing within a plastic coating both inside and outside is a guaranteed oxygen barrier. (An Aluminum layer in Pex is helpful for some but not all applications. It also increases the care needed before and during installation. Finally, accidental freezing of Plastic-only Pex versus Pex with an Aluminum layer will have different results - choose wisely.)I am pleased to order this Pex in White because I have a new, HVAC installation. A continuous run from manifold source to manifold termination should reduce the chance of leaks.Now, I chose a Clamp connection for 3 reasons:1. I will be Clamping as one of the last installation steps to prevent kinking in the Pex. Because this step will be late in the installation, a Crimp tool would not fit around the items now in the way.2. If I were to choose Crimp, I would want to be sure that the Crimp Ferrule and the Crimp Wrench are well matched. Can I otherwise trust the resulting crimp?3. The purchase of just One Clamp Wrench will work for Pex fittings in many sizes, Crimp Wrenches are size specific unless you spend yet more money to get a better Crimp Wrench with interchangeable heads.I also read reviews of Clamp Ferrules and learned that there are inferior products out there, so take time and choose a good manufacturer.After all this, I will state that I can see the advantage to a Crimp fit. A very good Crimp Connection is a fitting with the best chance to avoid turbulence because by definition. the fitting is mated to the connector with equal pressure in the circle. I cannot comment regarding past fit nor on Crimp fit for this brand of Pex but I can say that I am pleased with my purchase. Clamp fittings are considered excellent connections (perhaps equal to Crimp) and their stainless steel construction is an advantage in high corrosion environments.