Raspberry Pi / Retro Pie / Retro Game Emulators

Any of you guys into retro gaming emulators? I am thinking about getting a Raspberry Pi 3, downloading the most current Retro Pie, and installing the game roms so I can get a complete catalog of Nintendo and Sega games from all their systems. I'm not good with technical stuff but there are lots of tutorials on YouTube. Anybody have this type of setup?
 
I was thinking of doing the same actually with a Rasberry Pi, just never have time to get started on it.

I've had NES and SNES emus on my Galaxy S3 for years but prefer something a little more console like with a bigger screen and controller.
 
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