TVs, including LCD/LED, plasma, OLED, and more. Ask for buying advice, or help others, share experiences etc.
Many TV makers use different LCD panel types (VA or IPS LCD) in the same model range, sometimes limited to a specific size (often the largest or smallest TV) and sometimes just as a mix between VA and IPS even in same size classes.

It's very bad practice and would compare to car makers using a mix between diesel and petrol engines in the same car model.

Here are some examples:
- Panasonic FX780 (IPS except in 75" which is VA)
- Sony XE85 / X850E (IPS except in 85" which is VA)
- LG UM71 (IPS except in 60" which is VA)
- Philips PUS7803 (mix between IPS and VA)
- Samsung MU6400 (mix between IPS and VA)

There are many more. If you know of any examples - old or new - please share in this thread.

and hat tip to Dan for bringing it up and reminding me again through his much loved enthusiasm and energy! :)