Liitle consider that ARM type Controllers will be the next projects,Cause some reason about voltages and I/O capabilities.
There's numberous type of ARMs.
I'm very pleasant with SAM types,STM32 types,Nuvoton,NXP,Renesas types or probably ARM clone types made in China.
To made finished products something like picture below for beyond projects.
Any info for ARM kits type will be welcome.