The NXP chips have the other only open source GPU drivers, with the first being the RPi. If you want to do multi-media and need USB3, this is probably what you

The NXP chips have the other only open source GPU drivers, with the first being the RPi. If you want to do multi-media and need USB3, this is probably what you want. The upboards are interesting, some have an FPGA, and some NN processing soon courtesy of Movidious. The Pine64/Rock64 and Orange Pi are as cheap or cheaper than the RPi, and some Allwinner/Rockchip boards have binary GPU drivers, but really YMMV.