It doesn't always have to boil down to price. .......
The Raspberry Pi is a lackluster board with a crummy SoC and limited I/O and no FPU. Not to say that the Raspberry Pi is total crap, it does its intended job very well and there is a lot of community support. .........
OK I am a child of the 60s. Time not the drug thing...
The Raspberry Pi is an astounding teaching tool.
It is open at all the important levels (hardware and software) that
are impossible or impracticable for a student and class to explore
on any other computer.
At the current price it is less expensive than most textbooks.
It supports all the tool chains a student needs support on and
supports virtually any programming language worth teaching
and worth learning.
The last turn of the Raspberry Pi gave it more USB ports and
a better connector for the OS flash media (mSD). All good stuff.
I have built small MPI clusters with them and noticed that I quickly
ran into problems that plague programmers of million dollar clusters that I have
worked on. The Beaglebone Black is a nice baby step forward in ARM land.
This MIPS board that started this does need to match the price and features
of the R-Pi or BBB if it is to have legs. I am a fan of the MIPS ISA but with
modern compilers the ISA is almost a don't care.
Re this MIPS board do wish it had dual+ GigE networking. I do wish it
had more DRAM. I do wish I knew more about it in detail.
Of interest the SD card, case and wall wart power supply cost as much as the
board itself. All together it costs less than most textbooks....
But golly folks do not ignore the Raspberry Pi.