I wonder how these two boards and the support offerings will stack up?
I am reviewing both for publication. The M3 has that awesome SATA port, no fan, and it appears like some good OS support is in the works.
The ODROID-XU4 looks to be very fast, with a wide variety of add off modules, but perhaps shy in OS support.
I will say that hardkernel.com (ODROID's main page) has a first class user forum, website, and an awsome monthy magazine (worth reading even if you are not a ODROID customer), published in two languages.
No offense, but the forums here do not even a qualify as third rate net citizens, and I question the ability to get accurate answers [here] spoken in broken three word english sentences.
I love the Banana Pi (really - I do), but I wonder if the folks representing here could do a better job of, well, representing the product.