blenders - BlendTec -v- Ninja blenders/food processor

I've been wanting to do this side-by-side comparison  for a while.  A recent test batch of a sauce I'm working on for the next Making Hot Sauce class was

Been using the same blender/food processor since the 90s. It finally smoked. Definitely got my money's worth! : r/Frugal

Good blender or no? Thinking about buying it secondhand, but not sure if it can hold up to lots of ice and xanthan gum. I also don't know the model. Opinions??

Ninja Professional Plus Blender Duo - with Auto-iQ: Home & Kitchen

Have a question about NINJA Mega Kitchen System 72 oz. 5-Speed Black Blender and Food Processor with Travel Cups (BL770)? - Pg 2 - The Home Depot

Ninja Foodi Cold & Hot Blender 64-oz Black 1400-Watt Pulse Control Blender at

The 5 Best Budget Blenders - Winter 2024: Reviews