“…a chocolate ice cream and banana shake DOESN’T sound amazing right now.”
NOTHING banana sounds amazing. What has that poor chocolate shake done to make you punish it with a banana?
I had a BlendTec ~7 years ago, for a few years. Because I was a sucker for those videos. I really didn’t love it. It definitely was powerful, I’ll give it that. But I went through 3 containers because of issues with the bottom leaking, and they are fused to the container so the only option is replacing the whole thing. I found the different programs to be fairly annoying, I just wished I had something I could control directly rather than letting it run a program.
My (now) spouse had a Vitamix, and after using both, I sold the BlendTec. The Vitamix is just as powerful, in 5 years of use I haven’t had to replace the bottom, and the bottom is separately replacable, and it has a speed dial and 2 switches (on/off and variable/high).
The Blendtec is a solid blender, but the Vitamix is just better, IMHO.
As a counterpoint to @linsomniac 's experience, I’ve had a blendtec for several years now, and I love it.
The current models (and this 575) have an OFF/ON/Pulse mode like regular blenders, with multiple speed settings. They do have some preprogrammed things like smoothie, and I find smoothie does a great job at making, well, smoothies. I use manual speed and pulse for most other things. No leaking blender vessels for me, but that was a concern with the purchase because as @linsomniac mentions it’s not replaceable.