I have a Kingston HyperX 3K SH103S3B/120G www.amazon.com/Kingston-HyperX-2-5-Inch-SH103S3-240G/dp/B007R67FTY and it works well.
But go with a 240gb drive or maybe a 512gb if you want to spend more. As the 120 one will get a little tight especially if 16gb of it is allocated for hibernation due to your ram. This will leave room for your most frequently used games allowing them to load really fast.
My advice is to look for good deals at /r/buildapcsales/ and read specs and reviews closely. For high performance you will want to get one that reads and writes around 500MB/s.
Both of these are very popular high performance drives
www.amazon.com/Crucial-256GB-adapter-Internal-CT256M550SSD1/dp/B00IRRDHUI
www.amazon.com/Samsung-2-5-Inch-Internal-MZ-75E250B-AM/dp/B00OAJ412U
Here is my tower build that I use to stream PLEX/run sickbeard/run sabnzbd:
So SABnzbd downloads to B:/ (Daria) and when it is finished downloading, it moves the file over to X:/ (NAStyNate).