Unfortunately, with AMD, the problem is not only to have "fancy" graphics but
also to have a reasonable resolution. On the contrary, Intel graphical
chipsets perfectly work. That is why I would choose Intel.
As for the blobs in the two brands, they look equally bad to me (but I have
never really studied the topic): see https://libreboot.org/faq.html#intel and
https://libreboot.org/faq.html#amd
If stock Trisquel 9 does not provide all the shiny features the hardware
should provide, you can follow the instructions on
https://jxself.org/linux-libre/ to install a newer kernel.