No, there are no other tablets with a built in projector.
I wouldn't bother. The projector is rubbish, nowhere near good enough. (nevermind great) Too dim, too low resolution and finicky about placement for proper focus.
You would be far better off getting a normal tablet and connecting it to an inexpensive projector or wirelessly casting (broadcasting) content from the tablet to a television screen.
Like this tablet:
https://www.bhphotovideo.com/bnh/controller/home?O=&sku=1203131&gclid=CNrNnZje1NACFYpKDQodnuwK6g&Q=&ap=y&m=Y&c3api=1876%2C92051677682%2C&is=REG&A=details
Charger:
https://www.bhphotovideo.com/c/product/1203134-REG/nvidia_930_81761_2500_000_shield_world_charger.html
Which could be connected to a projector (or television if you don't want to do the wireless thing) via this cable:
http://www.monoprice.com/product?c_id=102&cp_id=10255&cs_id=1025505&p_id=10329&seq=1&format=2