We have owned Blendtec blenders (2 of them) for many, many years and love them!!! Have had the Wildside Jar just about a month and from the first blend we realized how superior it is. We can put a little more in the jar to blend and it mixes ingredients better in less time. The fifth side really makes a huge difference. Remember-don't put your jar in the dishwasher-dries out the gasket-jar won't last as long!