Bought a new jar because the old one had a worn out bearing (6-7 years of constant use). Would have been nice to have a replaceable bearing because there was nothing wrong with the old jar and I hated to throw it out but now we have a new one..
We bought a K-Tec Blender several years ago, its only weakness was the jar wouldn't last long without leaking around the gasket. We bought the Blendtec square jar to replace our latest leaker. It works very well and we are pleased with it. We do hope, however, that it will last longer than our old jars. It is after all very costly to replace a jar if it isn't under warranty.
Original jar had a bushing failure that caused strips of shredded or melted rubber to appear in our food. The bushing appears to be pressed and molded in, making it unrepairable. That is why I had to purchase a new expensive 4side jar. A redesign would be nice to make the part repairable.
It chops quickly and makes great soup!! I make smoothies every morning when I wake up, it does the job less than 3 minutes and no spills because the lid suction.
Thanks Blendtec for an awesome blender that does so much.