I'm looking for a new radio set with more features like inbuilt mixing, changing limits etc, but can't really afford a spectrum set. So was wondering what cheaper alternatives there are?

Heard https://www.amazon.co.uk/Walkera-Dev.../dp/B00OBB7WU0 were good but required flashing or something thing to make usable. Is it the best option? If so is this the correct process to make it work? http://www.hacksmods.com/2013/04/wal...ase-range-mod/

Thanks
Alex